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Zero RO/DI


alexcyf
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Hi guys, anybody know other than madpetz. Anywhere else I can get their zero Ro/di 5 stage model? Or is this their house brand??

Alternatively, anybody has good recommendations other than crystal pro 3 stage?

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  • 2 weeks later...
  • SRC Member

I got my Zero RO/DI from Madpetz too. I stayed in Pasir Ris HDB 7th floor and my gauge PSI reads at 45. Ken from Madpetz said is okay but nevertheless I still get the booster pump to speed things up instead of waiting long long for it to fill up the bucket.

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I used to have the 3 stage Crystal Pro too, but it is difficult to get TDS 0 reading after one to two months later. So with the new tank, I change to Zero RO/DI 5 stage is better. Moreover, I think the cartridge refill is cheaper to get from Madpetz. Just my input.

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  • 1 month later...

Madpetz already open at woodland. How long the membrane last depend on the TDS level of your raw tap water. Higher it is, shorter it will last

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I just came across a YouTube video that suggest that an effective RO unit should have 90% - 99% rejection.

In our case for marine top-up, is that a good gauge? Or should we be looking at 100% rejection efficiency? Because I keep seeing mention of TDS 0 reading.

The formula the video uses is

(Tap Water TDS - RO Water TDS)/Tap Water TDs x 100% = Rejection %

Can someone advise? Thanks.

Regards,
Jeff

Aquarium: 48" x 18" x 24" tank with 24" x 15" x 15" sump (approx. 150 gallons)
Equipment: Maxspect Razor 320W, Vortech MP40, Vertex Omega 180i, Eheim 1262 return pump, Hailea HS 66A, Bacteria King
Fish and coral food: Henry's Reefgourmet pellets, Preis coral energizer, Kent Marine PhytoPlex, Brightwell Reef Snow, Two-Little Fishies Marine Snow
Dosage: Triton Elements

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