armyman16
Aquarium Advice FINatic
- Joined
- Nov 12, 2011
- Messages
- 608
In my 20 gallon i test my nitrates and they were REAL high between 40-80 and so I did a 25% water change earlier today about 5 hours ago and just now I went to go buy another 5 gallons, should I do another 25% or will this be to much new water for one day?