water changes

[Aquattro]

Originally Posted by Amadod2

every week i do add trace elements

Unless you're testing for them and know they're lacking, I wouldn't bother. A good biweekly water change will take care of that for you.

[wreck]

Quick question, when u guys say 15-20% wc. Is that display volume or total volume of system? I have a 65 with a 40 b sump , how much would u change?

[Aquattro]

Originally Posted by wreck

Quick question, when u guys say 15-20% wc. Is that display volume or total volume of system? I have a 65 with a 40 b sump , how much would u change?

Total volume. Figure in rock displacement, sump isn't full, etc. For you, I'd say 20-25g biweekly.

[wreck]

awesome thank you for the quick response!!

[mseepman]

Every 10 days I do 50g or so.