how many uses RO water for water change?

[dkreef]

Hey i just added lots of caulerpa for RDP system.
I know that caulerpa gets rid of nitrates, phosphates, ect...
so i was wonderin, would diatoms show up less even if i use TAP water?
i have been using RO water, but i buy in gallons. it is a bit of trouble to get it everytime i do water changes.
SO HOW MANY OF YOU GUYS OUT THERE HAVE USED TAP WATER AND DID FINE???

JUST CURIOUS YA KNOW...

IS RO WATER A MUST????
( I DON'T WANNA BUY RO UNIT BY THE WAY)

[johnny]

it all depends on your water supply, some people have great water, some have sucky water.... why take the chance? Just use the ro or even better buy an ro/di filter.

Nick

[dendronepthya]

In my area, tap water is fine. I have been using it for the last 16 years or so.

[Agu]

dkreef,

If your water is ok there's no problem using tap water. Check here, http://www.waterdata.com or call your local utility for a copy of the latest testing results. In my area ro/di is necessary but thats not the case for every place.

Agu