I have an empty fishtank in my yard and there is a lot of algae in there on the glass. Can I take it off with a ruler or something and put it in my another tank with Oto? And BTW do Oto eat brown algae on Anubius Plant?
Yes the otos may eat the algae from your yard tank... just be sure no chemecals were ever used near it. Maybe todd a few LARGE river stones in it so you can just pull out a rock weekly as for the brown algae mine ate away at the stuff on my plants before I got everything in balance again
I think they will ever so often but not normally... I have silly fish and I can't everyone ever so offer schooling together
However you really should considered upgrading if just for the sake of your cories and uping their school to 6. There is comfort in numbers for schoolers. But as your stock sits now i think adding a couple more otos wold most definatly put you at stocked if not a little over stocked