With the 2HR Aquarist APT-EI, the famous nutrient dosing approach pioneered by Tom Barr is now available in a ready-to-use concentrate that removes the guesswork from trying to recreate this powerful and sometimes elusive formula.
Buying the nutrients separately easily add up to US$75+. A 500ml bottle of APT costs US$24.99
100% comprehensive Macro+ Micro formula of N, P, K, Iron and Traces in our proprietary Capstone RatioTM.
Try it for 100 days. If it doesn’t work, get a full refund. We are aquarists too and want the best for you.
Above: a slower-growing non CO2 tank using APT Zero.