My JBJ nano cube has a 100% Florabase substrate (testing the product out). I have noticed that I can't get the PO4 levels in this tank higher or lower than 0.1 ppm according to three test kits --two Seachem PO4 test kits and a Red Sea Phosphate Test kit. Even after dosing 2 ppm PO4 with a test kit spoon, the aquarium registers 0.1 just 24 hours later (test kit does register higher values immediately after dosing). The same test kits are responsive to my PO4 dosing in the 20g long where I have a 100% Eco-complete substrate. Has anyone noticed this problem with Florabase?
Carlos
Carlos