Browse Categories
Browse by Manufacturer
Customers Say
  • Just a quick note to thank you again and express my appreciation for all your help on this purchase. Your guys are great!
    - Rich
  • Thank you for the excellent service. Very impressed with service from you folks.
    - Tim
  • I was kind of leery about shelling out that kind of money without knowing what kind customer service I would get. Not anymore! I now feel like I made a wise choice.
    - Nicole
  • John was excellent in answering all my questions and even talked at length about new products and fish related stuff. I really enjoyed doing business with this company!
    - Travis
  • I just want to say thank you greatly for all of your assistance! I am highly impressed by your customer service focus.
    - Nicole
  • The item that I purchased was delivered a lot faster than expected, not to mention a professional job packing the light.
    - Michael
  • Thank you, John, for your prompt attention... I will definitely order from you guys again!
    - Jack
  • Tank is gorgeous. Whole family is loving it. Now we're spending our evenings watching it instead of TV!
    - Joan
  • Just like your feedback points out, you guys are great to deal with. I look forward to many more future purchases.
    - Lenny
  • Thanks again for the great service it was a pleasure dealing with you. I will definitely be recommending people your way.
    - Pete
  • It's been a long time since I've had such great customer service. I truly appreciate it and will be using you from here on out.
    - Eve
  • I want to thank you for you service. I will be recommending you to all of my fish friends and to the ten different fish clubs that I belong to.
    - Charles
  • We can't thank you enough! The chiller just arrived as you promised and we are back in business! You are a miracle-worker!
    - Dr. Delbridge, PMP
  • I've been in the hobby for almost 5 years now and have dealt with a lot of vendors. I am very impressed with the packaging and fast shipment!
    - Thai
  • When it comes time to buy a new tank. Fish Tanks Direct will be the first place I go...
    - Marc
  • Customer satisfaction is certainly a top priority for you, and we would definitely want to do business with you again.
    - Janet
  • I am writing this e-mail to say thank you for your great customer service.
    - Jimmy
  • The tank was delivered safe and sound. More over... the way it was packaged up for shipment was Excellent!
    - Darren
  • I couldn't find a better price on the item I wanted! The best price and the best service? You guys are great.
    - Dave
  • Fish Tanks Direct is PHENOMENAL! Their customer service is hands down the best I’ve come across in 10 years of reef keeping.
    - Wesley
  • I must say as being a business owner, I commend your company on the customer service and speed of your deliveries.
    - Rob
  • Thank you very much for your fast and efficient service... awesome!
    - Marlene
  • Just wanted to say thanks again for all you and your team did in assisting me with the fish tank. It looks great and I'm a very satisfied customer.
    - Scott
  • Thank you, John!!! Great customer service... give yourself a pat on the back!
    - Dary
  • Thank you sooo much for all your help. We love our new acrylic tank and setup. Everything is so much clearer and the color of the fish is much truer.
    - Jone H
Hanna Checker Alkalinity Tester

Hanna Checker Alkalinity Tester

Hanna Instruments
Model #:
4 x 8

Product Description

-Easier to use and more accurate than chemical test kits-
Colorimetric method
Accuracy ±5 ppm ±5% of reading
1 ppm (mg/L) resolution
Large, easy to read digits
Auto shut off

-Small size, big convenience-
Weighing a mere 64 g (2.25 oz.), the Checker HC easily fits into
the palm of your hand or pocket
Use for quick and accurate on the spot analysis
Single button operation: zero and measure
Operated by a single AAA battery

The HANNA HI 755 Checker®HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and have low resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 755 Checker®HC is accurate and affordable.

The Checker HC features an accuracy of ±5 ppm (mg/L) ±5% of reading and uses the colorimetric method.

The contoured style of this Checker HC fits in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.

The HI 755 Checker HC is extremely simple to use. After zeroing the instrument with your water sample, add the reagent to the cuvette and gently invert 5 times. Then insert the cuvette into the HI 755 Checker HC and press the button to read the results. Its that easy.

HI 755 Checker®HC is supplied with (2) sample cuvettes with caps, liquid reagents for alkalinity, syringe with tip, ­­­battery and instructions.

Product Reviews

Rate This Product:
or Create a Review
(0 Ratings, 0 Reviews)