RO Membranes

Discussion on aquatic lighting.

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RO Membranes

Post by Babyreef » Sat Apr 28, 2012 4:04 pm

I'm using the 75 gallon a day Dow filmtech and cant take it anymore. Its nearly 3 months old and I'm getting only 1 gallon per day maybe 2 max. My tds going in is only 40 and coming out is 0. The pressure sits at 55-57psi.

I am wondering what you all use for a membrane and what its performance is. Also if you run a boost pump on the system. I currently don't run a boost pump because I was assured my pressure was optimal for my membrane.

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Astrea snail
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Re: RO Membranes

Post by Amphiprion » Mon Apr 30, 2012 9:33 am

How much water have you made, roughly, and what kind of prefilters are you using? How often are you changing those prefilters?

I use the same Dow Filmtec membrane as you and I'm able to have one last for at least a few years. That doesn't mean much now, since I make very little water by comparison, but even when I made it constantly, I always got several years.

40 breeder seagrass patch reef

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