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Thickthorn Animal Inventory, part two - aquatic life

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Indoor fish tanks one to six, outdoor tanks one and two, and pond (featuring the usually-well-hidden Orff and if you squint you can imagine the Rudd near it). Note yeast-powered CO2 reactor on top of tank three - to make the plants grow!
13th Jul 2007, 17:21   | tags:,

ViX says:

Interesting! Does the tank stay outdoors all year? If you, don't you have any problems with freeze or it cracking?

13th Jul 2007, 20:10

mat says:

it's only been there a few weeks, so it's hard to say. the fish seem happy though - they've spawned and everything..

13th Jul 2007, 20:29

hildegard says:

"yeast-powered CO2 reactor"? Wonderful. That's crying out for a Heath Robertson-style Explanatoory Diagram.
Like the Elvis-proofing.

13th Jul 2007, 21:59

neko says:

However it works the plants look pretty happy on it. Mine never looked that good when I kept tropical fish.

17th Jul 2007, 10:28

mat says:

Dead simple - demijohn with water, bread yeast and sugar, non-return valve running to an airstone in a diffusion bottle (ie, a bottle stuffed with filter media to provide large surface area - to keep bubbles in the water as long as possible).

The trick, I'm told, to growing aquatic plants is LOTS of light - photons are normally the energy bottleneck. That tank has two BIG tubes in, and in the evening, you can watch oxygen streaming off the plants. Because of all the light, the limiting factor became CO2. The reactor seems to work. Plants certainly grow like mad in there.

Living with a marine biologist with a fish-keeping obsession is certainly educational.

17th Jul 2007, 10:39

swamprose says:

looks like happy fish, happy plants. just thank god you don't have raccoons in your life.

18th Jul 2007, 20:04