Last Updated: November 8, 2021 (Refresh Now)

Zacro LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature

Last Updated: November 8, 2021 (Refresh Now)
8.2
SCORE
/10
Total Reviews
1000
Old Reviews
503
Unverified
21
Spam Test
PASS
LCD
TYPE

Review Analysis - 476 recent, verified reviews

Detailed Mode
Usage
 82
easy to use, button, accurate, easy, thermometer
+93%
-7%
comment
" ...  East to install.  ...  "
comment
" ...  It's easy to read, no guessing.  ...  "
comment
" ...  Easy to use and ready on a pond  ...  "
comment
" ...  Easy to read and hooks right to the tank.  ...  "
comment
" ...  Not too big or too small, easy to read off of.  ...  "
comment
" ...  It's super easy to use, plug and play.  ...  "
comment
" ...  Easy to set up and use.  ...  "
comment
" ...  Easy to install and works like a charm  ...  "
Usage / Ease
 71
easy to use, accurate, easy, thermometer, easy to set
+100%
comment
" ...  Easy to read, very accurate when compared to glass type.  ...  "
comment
" ...  Can't ask for anything easier.  ...  "
comment
" ...  Easy to remove.  ...  "
comment
" ...  Easy to set up and use.  ...  "
comment
" ...  Easy to read so far no issues with it.  ...  "
comment
" ...  Works well, easy to read and suctions well to my fish tank.  ...  "
comment
" ...  Easy to use.  ...  "
comment
" ...  Very easy to read and seems to accurate.  ...  "
Accuracy
 65
thermometer, easy to read, accuracy, degree, aquarium
+92%
-8%
comment
" ...  A simple, easy to use, and - above all else - ACCURATE aquarium thermometer.  ...  "
comment
" ...  Mine seems accurate.  ...  "
comment
" ...  Very accurate and you don’t have to wait for the thermometer to catch up like the old fashioned ones with the red line.  ...  "
comment
" ...  Very easy to read and seems to accurate.  ...  "
comment
" ...  it is accurate n easy to read  ...  "
comment
" ...  Accurate, needs a backlight .  ...  "
comment
" ...  It works and is pretty accurate  ...  "
comment
" ...  After 6 weeks so far seems accurate, no failures and easy to read.  ...  "
Body
 54
water, thermometer, glass, gallon, small
+85%
-15%
comment
" ...  This was exactly what I needed to test the water temperature before I refilled my aquarium.  ...  "
comment
" ...  I’ve tested it on other water sources and I am extremely happy with this thermometer.  ...  "
comment
" ...  It's small (easily fits into a shirt pocket) and easy to read.  ...  "
comment
" ...  Simple to use and mount  ...  "
comment
" ...  Have several of these, tank, sump, fresh water storage system.  ...  "
comment
" ...  Not difficult to set up and get going it already is,all you do is sit in water  ...  "
comment
" ...  I have it in my 40 gallon aquarium and it has been working great so far.  ...  "
comment
" ...  Simple design works great!!  ...  "
Battery
 43
turn, included, thermometer, life, save the battery
+49%
-51%
comment
" ...  This thing doesn’t include a battery .  ...  "
comment
" ...  This product does not come with a battery.  ...  "
comment
" ...  Only complaint is that the battery does not have a good connection and I have to hold the back closed to get the thermometer to turn on.  ...  "
comment
" ...  Plus does not have an option to return it and they charge 3 dollars more to delivery the same day but then they do not send it the same day.  ...  "
comment
" ...  After putting the battery in that was included in the package, the thermometer wouldn't turn on. ... The battery also wouldn't come out no matter how hard I tried, I spent nearly 30 minutes trying to get the battery out.  ...  "
comment
" ...  I don't know if this was just mine, but it didn't come with a battery and the instructions don't tell you what kind of battery it uses.  ...  "
comment
" ...  Also the battery cover comes off too easily, inadvertently.  ...  "
comment
" ...  instructions do not mention which battery to use or that the battery was not included  ...  "
Cleaning
 35
cup, cups, tank, thermometer, suction cup
+77%
-23%
comment
" ...  - Suction cups stay on outside and under water  ...  "
comment
" ...  The suction cup holds the unit very nicely along the side of the tank.  ...  "
comment
" ...  I can’t get the suction cups to stay for very long, but I love the digital read out and on/off feature.  ...  "
comment
" ...  Suction sucks in water temp is accurate  ...  "
comment
" ...  Easily suction cups to where you want it to go and isn't an eyesore.  ...  "
comment
" ...  I replaced the suction cup.  ...  "
comment
" ...  Easy to attach with the suction cups.  ...  "
comment
" ...  Suction is 10/10  ...  "
Reliability
 33
months, died, stopped working, month, thermometer
+58%
-42%
comment
" ...  Everything is working perfectly.  ...  "
comment
" ...  I've actually been using this for my pond, not an aquarium, but it's been working great!  ...  "
comment
" ...  Has been super good and reliable  ...  "
comment
" ...  It’s working great so far!  ...  "
comment
" ...  edit 2/18/21: The same one is still working well.  ...  "
comment
" ...  Have been using it for 6 months without any hiccups  ...  "
comment
" ...  Been working great.  ...  "
comment
" ...  I’ve had it for 2 months and it works great.  ...  "
Price
 29
product, worth, money, worth the money, value
+86%
-14%
comment
" ...  Worth the money . ... even though , it did not cost much!  ...  "
comment
" ...  Happy with this product worth the money  ...  "
comment
" ...  You just can’t beat the value of this.  ...  "
comment
" ...  This is a good product for the money .  ...  "
comment
" ...  The price is unbeatable as well.  ...  "
comment
" ...  It was also a great deal!  ...  "
comment
" ...  Good product and good price.  ...  "
comment
" ...  Great value for a small price.  ...  "
Marketplace
 28
seller, replacement, product, described, amazon
+57%
-43%
comment
" ...  Good product we can trust the seller  ...  "
comment
" ...  Works as advertised  ...  "
comment
" ...  Item as described.  ...  "
comment
" ...  It works just as advertised.  ...  "
comment
" ...  Super fast delivery and way better looking (to me), compared to those wax ones.  ...  "
comment
" ...  Exactly as described  ...  "
comment
" ...  Works as advertised.  ...  "
comment
" ...  The product was shipped promptly and it was just as it was described.  ...  "
Body / Fit
 18
suction cup, mount, holds, suction, hold
+78%
-22%
comment
" ...  It's small (easily fits into a shirt pocket) and easy to read.  ...  "
comment
" ...  Attaches easily, battery included, works great  ...  "
comment
" ...  Holds suction well.  ...  "
comment
" ...  It's easy to read and the suction cups stay put.  ...  "
comment
" ...  Simple to use and mount  ...  "
comment
" ...  It looks like it may fall off.  ...  "
comment
" ...  Holds tight to inside of tank.  ...  "
comment
" ...  I went thru several glass thermometers suctioned to the side of the tank but they always seem to fall to the bottom after awhile so that doesn't help.  ...  "
Marketplace / Marketplace
 15
described, amazon, product, works as advertised, works
+80%
-20%
comment
" ...  Good product we can trust the seller  ...  "
comment
" ...  This works perfectly, as described.  ...  "
comment
" ...  Exactly as stated  ...  "
comment
" ...  It works just as advertised.  ...  "
comment
" ...  The product was shipped promptly and it was just as it was described.  ...  "
comment
" ...  It is all what is described.  ...  "
comment
" ...  Good seller, item as describe, fast shipping !  ...  "
comment
" ...  Exactly as described  ...  "
Body / Water Resistance
 13
thermometer, use, temperature, tank, changes
+92%
-8%
comment
" ...  I would never intentionally do this since it's not meant to be submerged,but it's nice to know it survived.  ...  "
comment
" ...  The accuracy makes it easier to regulate the temperature of the water.  ...  "
comment
" ...  I use this thermometer to check the water temp before open water swims - lakes, ponds, ocean.  ...  "
comment
" ...  I like this, it shows how hot the water is.  ...  "
comment
" ...  I use this for measuring the tempt of the water I’m fishing.  ...  "
comment
" ...  Works great to check the water temp in my turtle tank!  ...  "
comment
" ...  This is the perfect thermometer for cold water swimmers to test the waters they want to swim in.  ...  "
comment
" ...  perfect for all things, aquariums, checking water temps for lizard baths 🦎  ...  "
Body / Storage
 13
gallon, fish, aquarium, 5 gallon, thermometer
+100%
comment
" ...  I use it in my fish tank  ...  "
comment
" ...  Have several of these, tank, sump, fresh water storage system.  ...  "
comment
" ...  I use this in a 5 gallon Fluval Spec 5 tank and it works great so far.  ...  "
comment
" ...  I have it in my 40 gallon aquarium and it has been working great so far.  ...  "
comment
" ...  I have 2 1/2 gallon tank and it works great for me.  ...  "
comment
" ...  Using it for a 20 gallon glofish tank and it works well  ...  "
comment
" ...  Good for fish tank.  ...  "
comment
" ...  I have six or seven of these and I use them for measuring the temp inside my fridge and freezer compartments.  ...  "
Display
 12
easy to read, temp, lcd, numbers, easier to read
+67%
-33%
comment
" ...  It would be helpful to have a light in the display to make it easier to read.  ...  "
comment
" ...  Digital display easy to read.  ...  "
comment
" ...  Simple to setup and easy to read screen.  ...  "
comment
" ...  Easy to read display and appears to work well.  ...  "
comment
" ...  The large display is much easier to read.  ...  "
comment
" ...  So far this Zarco LCD Digital Thermometer seems to be working very well. ... The LCD temp. ... display is easy to read. ... display on table facing up which works fine for me.  ...  "
comment
" ...  It's a great product wish the monitor lit up so it was easy to check at night but other wise it works great.  ...  "
Cable
 12
tank, cord, cable, long, wires
+75%
-25%
comment
" ...  Works great it’s compact and has a long wire.  ...  "
comment
" ...  Right now it's sitting on top of the wooden surround I built for the top of the tank, which works fine, but the wire is obvious and it's not as finished as I would like it.  ...  "
comment
" ...  The cord is nice and long, so if you want to take the temp in the back, for example, and have the readout on the front of the tank, it's easy.  ...  "
comment
" ...  - Very long cord allowing you to place the sensor far from the screen  ...  "
comment
" ...  The probe is movable and with the long cord.  ...  "
comment
" ...  The probe & wire that goes inside the tank is small and easily hidden behind tank decorations.  ...  "
comment
" ...  The wire is also long enough to reach the bottom of my 24" tall tank with lots of length to spare.  ...  "
comment
" ...  Cord is lengthly and came with the battery.  ...  "
Performance
 10
fast, well, works, price, performance
+90%
-10%
comment
" ...  Reading is not instant by fast enough.  ...  "
comment
" ...  It gets the job done.  ...  "
comment
" ...  So far is doing a great job.  ...  "
comment
" ...  Did the job  ...  "
comment
" ...  I must say I was impressed with the performance.  ...  "
comment
" ...  It reads well and fast and sticks to the tank well.  ...  "
comment
" ...  Does the job.  ...  "
Usage / Setup
 9
easy to install, setup, easy to read, works, use
+100%
comment
" ...  Super easy to set up.  ...  "
comment
" ...  East to install.  ...  "
comment
" ...  Simple to setup and easy to read screen.  ...  "
comment
" ...  Quick and easy to setup and use.  ...  "
comment
" ...  Easy to use and install.  ...  "
comment
" ...  Easy to install and works like a charm  ...  "
comment
" ...  Was easy to install in my 2.5 gallon tank for a betta.  ...  "
Marketplace / Product As Described
 9
works as advertised, works, exactly, picture, advertised
+89%
-11%
comment
" ...  Works as advertised.  ...  "
comment
" ...  This works perfectly, as described.  ...  "
comment
" ...  Item as described.  ...  "
comment
" ...  Works as advertised  ...  "
comment
" ...  It works just as advertised.  ...  "
comment
" ...  It is all what is described.  ...  "
comment
" ...  Exactly as described  ...  "
comment
" ...  Exactly as stated  ...  "
Usage / Controls
 8
power, turn, saves, life, hold the power
+25%
-75%
comment
" ...  Power button turns on but would shut off.  ...  "
comment
" ...  Power button does not work so I cannot turn it off  ...  "
comment
" ...  Power button doesn't work  ...  "
comment
" ...  The on off button does not work.  ...  "
comment
" ...  power button could have been improvised .   ...  "
Body / Build Quality
 8
thermometer, tank, thermometers, better, stick
+50%
-50%
comment
" ...  I have to buy a glass thermometer to verify.  ...  "
comment
" ...  I only trust traditional glass thermometers now.  ...  "
comment
" ...  Also plastic shielding on the cable melted and pealed off into the bath.  ...  "
Marketplace / Delivery
 7
product, seller, replacement, one, offered
+71%
-29%
comment
" ...  The product was shipped promptly and it was just as it was described.  ...  "
comment
" ...  A nice gadget to have in your tackle box.  ...  "
comment
" ...  Super fast delivery and way better looking (to me), compared to those wax ones.  ...  "
Marketplace / Returns
 6
update, replacement, contacted, company, returning
-100%
comment
" ...  Difficult to read :( returning  ...  "
comment
" ...  **company sent a replacement which was much better, so maybe just received a bad one the first time.  ...  "
comment
" ...  Didn’t bother to return.  ...  "
comment
" ...  I cannot return because I disposed of packing.  ...  "
comment
" ...  Will be returning.  ...  "
comment
" ...  Not sure if there is anyway I can get a replacement?  ...  "
Body / Size
 6
tank, easy to read, fits, easy, easier to read
+83%
-17%
comment
" ...  Perfect for those small aquariums.  ...  "
comment
" ...  Not too big or too small, easy to read off of.  ...  "
comment
" ...  It's small (easily fits into a shirt pocket) and easy to read.  ...  "
comment
" ...  The large display is much easier to read.  ...  "
Cooling
 5
degrees, thought, thermometer, temperature, temp
+80%
-20%
comment
" ...  I keep my tank at a constant 77°F, and my room is colder than that.  ...  "
comment
" ...  Using this for our tropical fish tank temperature.  ...  "
comment
" ...  Found my tanks are cooler than I thought, few degrees cooler than aircon setting 76/ 75.6 and the two tanks I have them in show the exact same reading temp (unheated tanks)  ...  "
comment
" ...  Good thermometer for my aquarium sump.  ...  "
Body / Comfort
 4
red, like, tank, sensor, hold
+100%
comment
" ...  it even doubles as a rope for my red eared slider to hold onto  ...  "
comment
" ...  I let it hang behind the foam filter in the aquarium and literally it is hands free.  ...  "
comment
" ...  It looks like it may fall off.  ...  "

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Specifications

Display
Type:  LCD 
LCD
TYPE