Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Ditto: The 3 schools of Tetras are 2 too many. Get down to one species, and perhaps bump that up a bit.
Loaches are social fish.
Yoyos can eat the smaller fish (my Yoyos ate adult Neon Tetras when the Yoyos were barely 4" long). I would trade in the Yoyo for a small group of Zebra Loaches. Good for snails, a better social group, but won't eat the small Tetras.
Platies are not really warm water fish, so that might be another place to reduce the stocking in this tank. Of course you could always start another tank with cooler water fish!