ro water circulation

[griffithimage]

Hi, I keep about 5 gallons of water as a reservoir and have it feed into my sump via a tunze osmulator. The RO water is stagnant- does it need to be ciculated to prevent algae growth before it goes into the system?

[Reefmedic79]

If it's closed off from light no algea should grow, but bacteria will grow regardless. If you go through the 5 gallons pretty quickly I wouldn't worry about circulating it, but if it sits for a week or 2, a small air pump with an air stone will keep it moving.

[Randy Holmes-Farley]

I store my RO/DI water unstirred until I need it, which may be a few weeks. :)

[Zappo]

I store my RO/DI water unstirred until I need it, which may be a few weeks. :)

Same here. As long as the storage containers are clean, there shouldn't be anything happening in your ro/di that you have to worry about. There shouldn't be any nutrients in it to support any sort of life.