Upgrading Ro unit

Total newbie here: I have a coralife 3 stage unit, it reduces everything really well but leaves water that starts at 2.0 PO to .25 PO. I need to add a DI unit. My question. How? Where to pick up the unit, what to buy, is it John fittings? Best beads? Will this take the remaining PO out?

 

I am a noob going on 3 years, this is a GREAT forum with a ton of resourceful people, welcome.

yes..you do. carbon should usually help lower it some... 2.0 seems way high, but .25 is still too high.

Hook up a DI stage or 2. Obviously.

I have used SpectraPure and always recommend them first. Top notch equipment, great CS, and solid prices.

MAXCAP D2 ADD ON KIT
or
DI ADD-ON KITS

Yes

See above.

Almost certainly.


Hope that helps.

-Doug

 

well I'm sort of new to FL, seems the water here is really hard. Most houses have a water softener. Figured this would be enough with a RO unit. I guessed wrong. Just ordered a DI add on. Drove me crazy trying to find the PO in my tank. Decreased feedings, added phos remover, blah blah. Finally I tested my ro water for PO. There it was. Tank seems fine with the PO remover, but the water changes was just feeding the algae.

 

You do want a DI filter but don't put too much faith in phosphate test kits when used on RO or ultrapure water, they are not intended for such and are not accurate. Test kits are designed for tap water or saltwater not pure that is extremely hard to test.

 

well I would have zero phos before a 5 gal change, then jump up the next morning after the change. Then zero the next day. That's when I tested teh RO prior and when mixed. Before all I had tested was alk, trates, nits, and ammonia. never phos.

 

For RO or RO/DI you test conductivity or TDS, the other tests are not accurate and tell you nothing. If you have 0 TDS water with a good handheld TDS meter it is about as pure as you can get.

 

Ty. Im looking into getting a unit myself.

 

the DI unit I ordered will have one. Thanks for the tip

 

+1. Phosphate test kits are useless. They will only tell you when your levels are so high that your tank is about to go down the toilet. You can judge the level of phosphate by the amount of algae that is growing in your tank. You can also get a digital reader like a Hanna Checker.