A very accurate and cost effective way of understanding the kH value of your aquarium which is effected by C02 levels.

This solution (accurate to about 0.01ppm KH) can be used with all drop checkers and the solution is laboratory tested - this means no more guessing or being unsure.

We have already added bromothymol blue to this solution so you do not to add anything else.

Directions: Add a few mls to your drop checker, then pop the unit directly into your aquarium and wait to see the colour change.

This product should last at least two years.

You may also want to consider the 3ml Pipette which is used to dispense the Bromo Blue liquid into the Drop Checker.

Date Added: 29/04/2012 by Colin Stockford

definitely does what it says, - accurate and reliable. I would recommend you used a AE Design co2 drop checker.

Date Added: 23/02/2012 by Ian Middleton

Does as it says on the web site. Good value for a lot of solution.

Date Added: 14/03/2011 by Matthew Robinson

Pre-mixed with bromo blue, means its so easy to use... and 100ml looks like it will almost last forever, with the AE drop checker. Seems very accurate too, given the recommended time to adjust.

Date Added: 10/03/2011 by Michael Thorpe

Seems to be more reliable than the JBL permanent CO2 system would recommend this product.

Date Added: 27/09/2010 by Peter Bill

Very easy to use, showed just how flawed JBL checker systems is !! Recommended !!

Date Added: 20/07/2010 by Joerg Brender