
09-21-2009, 08:24 AM
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Join Date: Feb 2008
Location: San Antoino, Texas United States
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re: Large Vivarium Construction
As for the tannins, your best bet is to not bother with the carbon yet. The carbon is the only thing thats going to remove it but its going to become saturated too quickly. Your best bet is to run hose water through it for now and flush the system for a week or two. The leaching from the land section will fade and slow down eventually but theres no need to waste your carbon. I'm willing to bet it was saturated in the first 10 minutes honestly. Even with that large volume, its only going to be an effective scrubber if theres a managable low concentration.
What I do with my larger setups is allow it to become dark tea colored, and flush it all out. Then do it again about three times. I'm sure that can be a bit of water for you, but consider that the lower the dissolved salts, particulates, etc there are in the water, the less that will leach out from the ground area. When you flush it and refill it you make the water become an osmotic sink again for the leachate in the ground section. The only quick way I've found is to let it get nasty, then dump it all, rise, repeat. After the first two/three rinse cycles the primary leachate will have become dissolved and then I would put the carbon on it and run medium level water changes every few days until it becomes clear/the color you want. If its as dark as you say, waiting wont help, the carbon is probably useless now, and when you do perform water changes, unless its a large percentage, your just going to keep having this issue.
I say flush it out now. Fill it, and let it run for about a day. Flush it out again, and fill it. Then wait a day and see what the difference is. Keep going until you think your filtration can handle it. Don't bother at this point with the good RO/DI stuff. Its actually ideal to use in this situation as it will have a greater osmotic pull than tap water, but no need for the expense at this point.
Good luck with it! Were all waiting for the update pics!
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