{Tidal Potomac Fly Rodders} Re: Raising Crayfish

Sorry for the grammar -- I'm on coffee.  

Gene

On Tuesday, July 21, 2015 at 3:06:09 PM UTC-4, TurbineBlade wrote:

Though you didn't direct it to me I'll answer you anyway -- "no", you don't need extra aeration in addition to a HOB (hang-on-back) or "power filer" created surface agitation, and therefore dissolving oxygen into the tank water.  You'll probably have a hard time killing a crayfish through tank husbandry if you tried to kill it.  

If you want to add a typical "stone" aerator -- it doesn't hurt anythnig other than the noisy pumps vibrating and moving about the place.  Just install a check-valve so you don't back siphon water, very slowly, onto your floor.  If you only get bubbles out of some spots of the stone and not others, you can simmer it for a while to help.

Gene

On Tuesday, July 21, 2015 at 11:08:40 AM UTC-4, Misha Gill wrote:

Mark - I've been to the upper Monocacy and can confirm the vast quantity of crayfish in there. But that seems like a far jaunt. I'll probably just try to find one or two in 4MR. 

Gene - really interesting notes! Thanks for sharing your insight. I definitely want to catch a few darters now and raise them. I realize now that I have been mistaking them for banded killifish. 

Jeff, Rob - definitely going to have to watch out for their predatory nature. We've got 3 zebra fish, which are about an inch long. I'm not too attached to them (99c at petsmart) but it might cause Brooke some anguish lol. 

Brendan, do I need to buy an extra aerator for the tank? I currently just have a filter that creates a little cascade for aeration. 

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