% water changes & Top off water?
 

1. Just curious what percentage and how often do you do water changes?

2. Also when running your ATO's or DIY for evaporation do you use salt or fresh?

THX :biggrin:

1. 5-10% weekly
2. Fresh

Same here.

10% change weekly and fresh top
off

1. 15% Weekly
2. RO/DI saturated with calcium hydroxide

1. 10% a week
2. Fresh.

If you top off your evaporated water with salt water, isn't there a danger of increasing your salinity? Water evaporates, not salt.. or is there a new school of thought that I'm not aware of ?

1. weekly 10%
2. always fresh or you'll increase your salinity. evaporation leaves the salts behind.:biggrin:

15-25% weekly or bi-weekly.
RODI water with 0 TDS.

1. 10% weekly
2. Fresh ATO

I do 20% weekly, top off with distilled.

15% bi-weekly
Always use fresh to top off.

15% weekly
Fresh

30%
fresh

1. Approx 25% water change...maybe once in a blue moon

2. always fresh water top off

1. 10% bi-weekly
2. fresh

ditto

20% Bi-Weekly
Fresh RO/DI

10%, been sliding to monthly (bad me)
ATO ro/di

20% bi-weekly
fresh ro

5% every two weeks

tap water for top up. done manually

I'm such a lazy ass:
- 20% monthly-ish (4 to 6 weeks)

- FW (w/kalk) top-off

15% every two weeks.
RO/DI Fresh water for me. Every two weeks I let my RO/DI unit run overnight (which gives me enough to pump out my 15% needed for salt mixture and the rest stays for ATO). 100 gallon tank.

7.5 to 15 % weekly.
top off with ro water

reply
 

12.5% bi-weekly (10 gallons on an 80 gallon system)
RODI ATO.

PS. Every other month I do a larger water change with a detritus clean up. It's usually about 25-30% in one shot.