I've had a planted tank since I started the hobby but I do more plant replacement than propagation. My plants grow slowly and new leaves are small. My conclusion is a calcium deficiency since my water is very soft. 0/0/20 ph: 7.2-7.4 Gh 3dgh KH 3dgh I dose F. potassium, F. potash, F. nitrogen, API Co2 Booster, API Leaf zone. I need something that will raise GH without raising my pH as 7.4 is really the max pH some of my wild caught fish should be in. Should I be worried about algae blooms with the addition of calcium? I've looked at Seachem Equilibrium, Seachem Reef Calcium, and Reptisafe water conditioner.