Nitrates were 80 so did bigger 2/3 change today with 40l RO. 200 litre tank. Can I do another water change soon or with the shift in parameters today should I leave it a bit? How long should I wait? See parameters below. Want to get nitrate down further and soften the water a bit more, but not below GH of 11.
I haven’t used RO before but wanted to start, so figured that with the tap nitrates at 30 ish it’d be good to start now. What I didn’t consider was the need to do more water changes in a shorter space of time could potentially shift the parameters too quickly for the fish. My plan is to use 1/3 RO with each water change.
Liquid test results:
NTL Ammonia 0
NTL Nitrite 0
Salifert Nitrate 5-10, API 30
Ph 7.4 API
GH 13 NTL
KH 10 NTL
Tap water
GH 17
KH 12
Ph 8 (after 2 days in a glass)
Thanks