cory babies in gross tank

[jeninco]

My daughter had a pair of aeneus corydoras in a small (3?) tank.  The tank had a ton of algae in it, and we were in the process of getting a larger tank when they laid eggs all over it.  We set up the new tank and moved the parents before the eggs hatched.  Parents are doing well in the new tank, but I'm concerned about the babies in the old tank.  There is a ton of algae as I said, but they seem to enjoy that.  I've tried to siphon up some of the old stuff, only to find smaller fry down in the gravel...so I'm hesitant to bother them.  I'm considering moving the larger fry to a better tank, but am afraid of hurting them.  Which is the lesser risk at this point?  I have a filter in the small tank with panthouse to keep the babies from being sucked up, but no air stone.  I'm feeding them first bites a few times a day as well.

Thanks!

[LittlePuff]

Move the parents back to the old tank and cycle the new one first, or they will die from ammonia poisoning. There are some good articles here on cycling.

[Morgrid]

I would leave the fry alone for a few weeks. Do regular partial water changes until they get older. Algae does not harm fish, it is actually beneficial to them. How the tank looks is typically not an indication of water quality.