Caroleinwv Posted January 27, 2021 Share Posted January 27, 2021 Good evening Nerms. I just found a weird situation. I did not test every tank but in the few I checked I got high - over 1000 ppm TDS.. no, not my tap water. It checked average 25. So, on two tanks I checked all parameters which were within normal, low ranges except GH which was off the chart. Tap water normal. What is causing this? Fish seem fine. Plants seem fine. Low pH. 6.0 - 6.5. Link to comment Share on other sites More sharing options...
Colu Posted January 27, 2021 Share Posted January 27, 2021 What substrate are you using in your tanks and do you have any rock Link to comment Share on other sites More sharing options...
Caroleinwv Posted January 27, 2021 Author Share Posted January 27, 2021 The one tank is ecocomplete and the other is dirt/ gravel. Hmmm. Some Lava Rock. Could that be culprit? Thank you! Link to comment Share on other sites More sharing options...
Colu Posted January 27, 2021 Share Posted January 27, 2021 It could be the lava rock you can put some vinegar on the rock see if it fizz Link to comment Share on other sites More sharing options...
Caroleinwv Posted January 27, 2021 Author Share Posted January 27, 2021 Thank you! I will give it a go. I was ready to blame the instrument, my API test kit, etc but after numerous tests, it points to some sort of tank syndrome. I'm going to test more of my tanks in am and try to sort out a pattern. I appreciate your input! Link to comment Share on other sites More sharing options...
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