I've had this tank for ~4yrs, my oscar (Blaze) has been the sole occupant until recently. The Red Parrot has been with us for about a week. Surprisingly enough, after some chasing, my oscar has accepted him into the pack . Yes, I know it might get cramped, despite what I promised my wife I'll get a 125g if it gets to tight . I changed my substrate from rock to sand, love it but it's a lot more work to keep clean. Just added the small AquaEL Turbo Aquarium Filter 500 to get some still spots where poop was accumulating moving.
Thought I'd share, don't be intimidated if you want to do this, it was a lot of work but doable. Take care of your biological filtration b/c you're going to take a hit on the bacteria in the tank. So far testing everyday haven't seen any ammonia/nitrites. My hydroponic setup does a pretty good job on nitrates so very little in the water but some so I don't think it'll crash.
To add, the plant grows like crazy, cut off ~10ft of growth a few days ago.
Thought I'd share, don't be intimidated if you want to do this, it was a lot of work but doable. Take care of your biological filtration b/c you're going to take a hit on the bacteria in the tank. So far testing everyday haven't seen any ammonia/nitrites. My hydroponic setup does a pretty good job on nitrates so very little in the water but some so I don't think it'll crash.
To add, the plant grows like crazy, cut off ~10ft of growth a few days ago.