CalmedByFish Posted July 12, 2021 Share Posted July 12, 2021 I have a small vase that I was keeping in the bathroom window. It has a good population of micro worms and micro crustaceans, which I'd like to dump into tank(s) with fish. The catch is that the water is pea green, and I can't simply pour out the water and keep the critters, since the crustaceans stay in the water column. Pros and cons of emptying the critters and green water into a tank? Or maybe splitting it between multiple tanks? Link to comment Share on other sites More sharing options...
KBOzzie59 Posted July 12, 2021 Share Posted July 12, 2021 Maybe a baby brine shrimp sieve? 1 Link to comment Share on other sites More sharing options...
CalmedByFish Posted July 12, 2021 Author Share Posted July 12, 2021 On 7/12/2021 at 2:10 PM, KBOzzie59 said: Maybe a baby brine shrimp sieve? Don't have one. Is the idea to find something that catches algae, but lets the critters through? Link to comment Share on other sites More sharing options...
KBOzzie59 Posted July 12, 2021 Share Posted July 12, 2021 (edited) It lets algae through and catches critters, unless they are smaller than Artemis BBS. Unless you have globs of algae. An Artemis sieve is generally 120 micron, green water algae is in the 1.5 to 20 micron range. Edited July 12, 2021 by KBOzzie59 Additional info 1 Link to comment Share on other sites More sharing options...
CalmedByFish Posted July 12, 2021 Author Share Posted July 12, 2021 I'm guessing a paper towel wouldn't suffice. Yeah? Link to comment Share on other sites More sharing options...
MNG Posted July 12, 2021 Share Posted July 12, 2021 I would suggest holding off on such an endeavor. That water may contain all sorts of microbes and spores that might not be good for your fish. Link to comment Share on other sites More sharing options...
GardenStateGoldfish Posted July 12, 2021 Share Posted July 12, 2021 While I wouldn't recommend it, I have dumped green water in certain tanks of mine many times, however it was usually for goldfish fry and the tanks themselves didn't have enough light to sustain the green so it wouldn't take over. I suppose your only risk with it is that it cultures your tank into pea soup tank, the fish will love it, but you won't be able to see anything inside lol. Also, dark green water, while still amazing, poses a risk to overnight fatality because green water absorbs oxygen overnight. If you do not run air you run the risk of something potentially suffocating, not from a pitcher of green, just if it took over the entire tank. Link to comment Share on other sites More sharing options...
eatyourpeas Posted July 12, 2021 Share Posted July 12, 2021 You can try two passes through a BBS sieve. One from the green water container, the second with dechlorinated water, then put the critters in the desired tanks. I do that with mine for the pea puffers. 1 Link to comment Share on other sites More sharing options...
CalmedByFish Posted July 13, 2021 Author Share Posted July 13, 2021 On 7/12/2021 at 3:55 PM, MNG said: That water may contain all sorts of microbes and spores that might not be good for your fish. All contents are actually from my tanks. It's just that the micro fauna thrived, so I'm hoping to keep the increased population. On 7/12/2021 at 6:05 PM, GardenStateGoldfish said: dark green water, while still amazing, poses a risk to overnight fatality because green water absorbs oxygen overnight. I never would have thought of that! I've heard that plants absorb oxygen overnight, and I guess algae is a plant, so it makes sense - but I wouldn't have realized. Thanks. On 7/12/2021 at 6:13 PM, eatyourpeas said: You can try two passes through a BBS sieve. It's a good idea, but I don't have anything similar to a BBS sieve. Link to comment Share on other sites More sharing options...
MNG Posted July 13, 2021 Share Posted July 13, 2021 OK well - it started out in your tanks, but afterwards it was left out, correct? All sorts of things may have gotten into it since then. Maybe I am misunderstanding? I'd be reluctant to add such water - tropical fish can be very vulnerable to stuff they haven't previously had to deal with. ( Think COVID 19 in humans ) Just my $0.02 . 1 Link to comment Share on other sites More sharing options...
Hobbit Posted July 13, 2021 Share Posted July 13, 2021 Can you see if any of the critters are attracted to light? Then you could slurp them out with a pipette. Or you could use a fine meshed fish net to scoop them out. That has the benefit of only catching the adult critters and leaving any smaller ones to grow. 1 Link to comment Share on other sites More sharing options...
CalmedByFish Posted July 13, 2021 Author Share Posted July 13, 2021 On 7/12/2021 at 9:49 PM, Hobbit said: Can you see if any of the critters are attracted to light? Then you could slurp them out with a pipette. Or you could use a fine meshed fish net to scoop them out. That has the benefit of only catching the adult critters and leaving any smaller ones to grow. I'll try the light trick. I'm actually wanting to completely empty the vase. 1 less body of water to think about. 1 Link to comment Share on other sites More sharing options...
Hobbit Posted July 13, 2021 Share Posted July 13, 2021 Oh in that case you can drive it over to me. 😇😁 Hoping to grow some green water as my next project! 1 Link to comment Share on other sites More sharing options...
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