new/old member

[shadow]

Hi gang,
Live in winter springs fl for about 14 years, originally New York, can you tell by the accent. I own a 125 gal reef/fish tank, just purchast razor led 300 watt,looking to buy a ro and or ro/di filter. With corals do I really need a ro/di filter or can I get away with just a ro filter. I hate waisting water. Well hope to see you all next meeting. Dave

[CoralolisEffect]

Welcome glad to have you back.

Winter springs cool! I am in your area springs/oviedo.

Towards the di I don know. I have always used the di with ro. It's what most all do In practice. Geting a refillable cartrage and filling the di yourself saves a couple bucks.
I do advocate a flush kit (cheap) to regulary flush the ro membrane.

[philip_r5]

I would recommend using the Ro/DI.

RO/DI stands for Reverse Osmosis and Deionization.

Do I need a DI stage?

You can save some money by purchasing a three-stage filter lacking the DI stage. Reverse osmosis typically removes 90-98% of all the impurities of significance to the aquarist. If that is good enough for your needs, then you don't need the DI stage. The use of RO by itself is certainly better than plain tap water and, in many cases, is perfectly adequate.

RO by itself might not be adequate if your tap water contains something that you want to reduce by more than 90-98%. For example, if you have 10 PPM of phosphates in your tap water, reducing it by 90% takes it to 1 PPM, which is still too high.

If saving money up front is a major concern, a DI stage can be added later. ~Reefcentral.com


--- Take a look here for more Ro/Di Faq's
http://www.reefcentral.com/index.php/rodi-faq

[techbiker]

Welcome back!
About the RO-DI just get a TDS meter and make your decision from there, what is going to be more expensive, In the long run, what makes more sense on this hobby