Lowering TDS levels without RO water.
Howdy! Just wondering if there's a way of lowering TDS without having to use RO water. I'm keeping some rednose shrimp and Lampeyes and they're doing really well, but i'd like to lower the TDS from the (minimum) levels of 300 I'm getting at the moment. I've had up to 500+ on some readings! Not using C02.
All very new to this water readings malarkey.
yesterdays readings (with no water change that day)
N03 - 0
GH - 8
KH - 10
CL2 - 0
TDS - 540.