How can I improve/fertilize my gravel substrate?
I got into the hobby recently, didnt know substrate was important and just bought gravel....plants grew really well for the first few months and now the growth has slowed down a lot! What can I do to fertilize the substrate? I cant afford to change the substrate at the moment?
I've heard of root tablets, which ones are the best?
The tank does not have co2 either. Planning to keep it low tech, cant really afford to upgrade much on this tank. Hopefully I'll be able to in a few months. Trying to find a solution in the meantime.