Planted Tank Obsessed
Join Date: Jul 2014
Location: Aurora Colorado
TDS & Water Change
For the second week in a row the TDS reading in my 26B has increased dramatically from 103 to 940 after 20% water change. Last week when it happened took it about three days to drop back to normal.
Background: 20% weekly water change from tap
Tank fully cycled, heavily planted, sunsun 302 canister filter, DIY CO2; tank very clean, fish healthy
Fertilize using EI with no ferts on 7th water change day
Tap TDS: 240
Amonia, Nitrate, Nitrite readings all zero
Water Change treated with Prime
I do NOT disturb the substrate when cleaning but do draw the water from the bottom of tank.
I do Not shut off the canister since I'm only doing 20% and it runs fine at that level. However, I'm thinking for some reason this is about the only thing that can account for the TMS increase. Canister was cleaned 36 days ago. Water is still crystal clear and flow is not reduced. As I'm writing this seems it almost has to be the canister. Think I'll clean it next week before water change and see of the TDS still elevates .
None of the actions of the fish seen to change, neon tetras & harlequin rasboras.
Not really concerned since the fish are doing so good but more curious than anything.
Last edited by DayOlder; 10-06-2014 at 03:43 PM.
Reason: Additional Information