Well, CometKeith, since you're north of me, and if that worked for you last year, I may just get an air pump and run a couple of air stones, plus I've already decided to run my main pump somewhere in the middle, just shooting water towards the surface, no pipe attached to it. I'm thinking that won't harm that pump, having water free flowing, but will it maybe cause it to crash, since nothing slowing the water down?
Also, and I think I've asked this question in another thread, can anyone tell me if there is a way to tell the difference between goldfish babies (3-4") and koi? I'm about 95% sure my first spawning is goldfish, the colors seem to assure that, but not sure about the 2nd one, although those babies are less than 1" still. Not growing as fast as the first set, but maybe because water is cooler this time around. I've seen second set for at least 2 weeks, maybe 3 now. Pretty sure those are also goldfish but just wondering for next year, when/if the koi spawn (I've never seen them yet, but that means nothing) how will I know about the babies? Thanks!!!