hello, This is my first post on this website i hope your all ok. I have pea gravel in my tank and it is quite corse. I am soon to start planting in my fully established community fish tank. I have around 100 fish of various breads shapes and sizes. Not too big though lol. I am soon to set up a Diy co2 system and shortly after to plant up my tank. I am worried about the gravel. It might be a little corse to have a sucessfull planted tank. Also my lighting is X4 T8 30W lights 60cm to substate ish. Any advice on any of these issues including ferts etc would be great. Thank you.