I have totally redone my tank from what i posted on 1st post. I will soon post a new vid and img.
Added a HUGE ASS filter (it is for 50G to 100G tanks or even small ponds) added Huge bunch of water wisteria and moved plants around. Also someone has given (forced given) me Orange/White Goldie, i think its male but maybe female, just 4 month old , is giving the big goldies nice company, he sleeps with big goldies and eats with them , v energetic.
All tests of water are good, water is pristine clear (The water looks totally clear even when the fish-tank-wall is covered with thin layer of algae, which i don't wipe off quickly but once in a week now). I am proud of it.