Hello My name is Sergio

Hello My name is Sergio
I have two tanks one is a small 10 gallon consisting of
a goldfish
6 platy's
and a for now the home of a small parrot head chichlid (he was in my show tank but he was getting picked on)
the substrate is gravel

My main tank is a 125 gallon aquarium with t5 lights with 10k bulbs
3 oscars
3 orange chichlids
one blue chichlid
3 tin foil barbs
2 plecos
1 chinese algea eater
2 black skirt tetras
(originally there was 3 parrot head but overnight 2 got killed and i spared one thankfully)
The substrate consist of the remains of live rock, and 2 inch sand bed

This tank was pieced together very weirdly and i know how some of these fish aren't suppose to live with those fish but they get a long.
planning to get rid of one oscars when they grow up a little older but i have to find it a nice home first.

I had a marine aquarium however like a typical aquatic science student i rushed things and things went bad fast.

in my marine aquarium i had
an full grown empeor
fox face lo
hermit crabs
snails
clownfish
etc etc all the typical marine fish but after a 2 years of running things got sour bad fast.