Planted Tank Obsessed
Join Date: Jul 2014
Location: Aurora Colorado
Tannins & High TDS readings
I have a couple of tanks with Malaysian driftwood that still, about four months in tanks, is releasing tannins. One tank, 10g shrimp tank HOB filter, has a TDS of around 370. No chemicals or treatments of any type are added to this tank. All water is RO. The tank contains 10 Pumpkins, driftwood and Java Moss. 10% weekly water change with RO water. Shrimp are fed maybe once a week w/ barley. Long story short the only think I can come up with and am asking is can the high TDS reading come from the tannins alone?
The second tank, 26B w/ canister filter, does have a lot of livestock, is heavily planted and does get dosed daily with fertilizer so I would expect it to have a higher TDS reading and it does around 530. Again I'm wondering of the tannins are making the reading so high. I've even been giving this tank 20% water changes weekly with RO water.
Fish, shrimp, & plants are all doing well so I'm not as concerned as I am puzzled. Thank you for any input.
Last edited by DayOlder; 08-02-2014 at 05:13 PM.