Aquatic Reef Systems Countertop DI Filter

[Tom Berry]

Is anyone using this?

https://bpweb.bpweb.com/aquaticreefsystems.com/TWP_Tap_Water_Purifier.htm

Aquarium Pharmaceuticals makes a similiar product their Tap Water Purifier but this loooks like a better unit.

Tom Berry:fish2:

[wthorpe]

haven't tried that, but i am using the aq. pharm. tap water filter that you mention. the cartridge seems to produce about 50 gal before needing replacement. that's lower than i expected given what i'd heard about the quality of new york city water. i'd be interested other people's experiences with either unit.

warren

[Peabody]

That is not efficient for $$. It will exaust in no time and you will have to buy expensive refils. Get their cheap 2 stage RO unit. I got one for $69 and use my old Aquarium Pharmaceuticals TWP after it so I have my own cheap RO/DI unit.

Depending on how crappy your tap water is the DI unit alone may exaust in less than 50 gallons, maybe a lot less! (I would get about 40-50 out of a Aquarium Pharmaceuticals TWP . Those aren't cost effective.

[Steven Pro]

I had an Aquarium Pharmacueticals Tap Water purifier and got about 40-50 gallons out of it before needing a new cartridge. About five years ago I switched to a Kati-Ani 2 unit and love it. It makes superb water, is completely rechargable, cheap to recharge, produces 10 gallons per minute, and comparable initial cost to many RO units. See here http://www.drsfostersmith.com/product/prod_Display.cfm?siteid=6&pCatId=4499

[wthorpe]

hey, steven

just curious... what's involved with recharging the kati-ani combo?

[Steven Pro]

You run a diluted solution of Muriatic acid (You can buy this at any hardware store. It is sold/used for etching concrete.) through the Kati unit. The Ani portion is recharged with a chemical you buy at the grocery store called Red Devil Lye. It is for unclogging drains. Both are pretty nasty chemicals, so I don't recommend these units for everyone. If you are comfortable working safely with these, then you may want to consider this unit. I have the number 2 size set and get at least 200 gallons, perhaps as many as 300 gallons, between recharges. The chemicals cost around $10 total and last for about 3 recharges. It is a very cost effective method of purifyig water. It makes no waste water and can produce up to 240 gallons per day. The only downside is the recharging.

[The H2O Guru]

You can buy D.I. resin in bulk or in much larger containers . You could get tanks of resin that range from 7 inches indiameter and 18 inches tall to tanks larger than you are .
You can also buy refillable cartridges .
To regenerate D.I. you need acid and caustic . Both dangerous and smelly .

It's up to you but the R.O. D.I. is the absolute best of both worlds , no chemicals , no bacteria , no virus ,no pathogens , no endotoxins or heavy metals . Something D.I. alone can not say .

The H2O Guru Walter