Finally completed building my first low tech planted aquarium (I think). Using a Aquaworld slim filter L 137gallon/hour + a bubble sponge filter. The LED fixture's new( I forgot its wattage but think its 13-14W) Got round 10 individual plants in the tank, altho I mainly chose the low maintenance variety. Admittedly being a noob aquarist the tank is overstocked mainly with schooling fish(various tetras and 5 dainos), 5 cories, an octo couple, gouramis,3 swordtails and a single balloon ram. It looks nice and all the fish are healthy(although some are alittle fat). Also have a mystery snail in there... somewhere. Tank's cleaned weekly where roughly 30% of the water is removed along with the visable poop, I leave the gravel boxes and plant roots alone tho. Any thoughts on how I could improve it?