- Joined
- Apr 3, 2017
- Messages
- 2,470
- Reaction score
- 3,396
Hi Randy. I have a question. On my current 120 gallon setup i try to keep my alk at around 8. I use nsw and it usually runs at a little over 7. There are times during days of rainfall that i don't like to collect water so i keep a bucket of IO regular on hand. The IO usually mixes at around 9-10 alk. My total water volume is around 105 gallons. I do a weekly 10 gal water change. How much do you think my alk will change doing this size water change? Thanks