whats going to happen if i have great flow and only change water not vaccume the substrate? is it good for the plants bad for the fish? bad for the plants bad for the fish? or good for both? i have brown pea gravel as substrate so it dosent look bad at all with no vaccuming. i have been trying this for about 2 months now and no problems yet. do yall see any problems in the future? i am also taking my plant trimmings and letting them dry out and then grinding them up and placing them back in the tank.