| | Re: add CO2/ a few other questions
Not sure about the Co2 I am no expert on plants but I definitely think it would help to get pictures uploaded so we can see what the tank looks like. The algae is probably from the massive lights. I would suggest adding Otocinclus if you have a reputable dealer. Tricks when buying oto's are ask if they are tank raised or wild caught. Ask how long they have been in there? If its a week you will be good. Also ask what they have been feeding them if they say flake food walk out. Make sure they say algae wafers, zucchini and so on. Get the ones with the big bellies. If that doesn't work get Pitbull Plecos (Paraotocinclus Jumbo) they prefer a group of 3 or more. What are your water parameters? Also if I may suggest with your stocking either take the gourami or ram back they really are not well suited for each other. Also if you are keeping a ram alive in there that means the water is soft or moderately hard. That is not good for the platy or guppies they prefer hard water. But if you want to keep them, keep them.
My opinion in stocking is up your school of rasboras to 10, up the cherry barbs to 12, get a partener for your ram, up your school of cories to 8, 5 otos, and try and return the liverbearers and gourami. Shrimp wise amanos will be the best if you don't have moss bc the ram will not eat them but if you get lots of java moss get cherries and they will breed and occasionally your ram will have a tasty snack. This may seem like a lot but you will be better off in the long run.