Suggest an RO/DI

[ReefSparky]

You asked if you could attach a DI component to current RO unit. But you don't have an RO unit. You've got a tap water filter.

Another thing that doesn't get much mention, is that a 50 or 75 gpd unit has a higher rejection rate than a 100 gpd or higher unit. A higher rejection rate yields higher quality water. If you're not going to drink the RO/DI water, and use it only for water changes and topoffs, with planning a 50 gpd RO/DI unit will meet your needs.

 

[SuperScro]

I know my Tap Water filter isn't an RO, which is why I need to get something better. I was asking if I could buy an RO unit, and perhaps attach the Tap water filter to it. I am planning on a 50 gpd unit.

 

[ReefSparky]

I was asking if I could buy an RO unit, and perhaps attach the Tap water filter to it.

I asked a similar question before I started researching RO/DI systems. I think when you read a bit about RO/DI systems, you'll see that they're so efficient, there's no real need to attach anything else to them.

Put differently, buying an RO/DI system, then attaching a tap water filter to it is like buying a Ferrari and pushing it around with a Geo Metro.

Once you purchase your RO/DI, you won't have the need for anything else.

 

[Icom]

I just picked up a Coralife Pure-Flo II RO Unit 50 gpd 4 stage..
I needed something for the "liquid rock" here.It's bigger than I needed,but got a decent deal on it,so I grabbed it.I just turn on the water supply the night before tank maintenence;and it fills up a 26g can with a heater in it by the time I'm ready to do water changes the next morning/day on my 55g,37g and 10g tanks.I'm sleeping anyway,so what do I care if it takes awhile to fill up:grinyes: Fill the can up again when I'm done..so its on about a day or so during the week. the can is full,heated and waiting if needed.

I just need to figure out the ratio of RO water to tap water to keep the PH where I need it . PH is 8.6+ out of the tap,very hard water here,the RO unit takes it to 6.2 and takes the rest of the junk out too.

 

[animalman]

I just bought a RO/DI from The Filter Guys.
$ 199.00 - OCEAN REEF + 1 FIVE STAGE 75 GPD RO/DI
http://www.thefilterguys.biz/ro_di_systems.htm
I choose this one cause of the daul TDS and membrane flush was included. With S/H was just over $200. I also use the waste water to fill my fresh water tank, after treated with a 3in1 water conditioner. Just like nycsicktank said. Not realy sure I need the DI part though as I have 0 TDS coming out of the RO going to the DI. Guess it still can't hurt to have it though.

 

[SuperScro]

I was considering buying a Pinnacle RO system and getting an DI attachment.

 

[strangerdejavu]

If using RO wastewater in a freshwater tank, you don't need to add dechlorinator to the water, right? It should already have been filtered out by the previous stages?

 

[clckwrm]

I just bought a Kent Marine Maxxima 24GPD for 47g system. After thinking a few emergency top-offs with tap water couldn't hurt much, I now have a slight hair algae problem. Even though my test kit reads 0. I do know that my Urchin skimmer is kicking fin and taking names. And my tank's biggest inhabitants are 4 small hermits, 4 snails, and 2 good-sized brittle stars. I don't feed the system at all either.

I heard that lower filters with lower GPD generally work better than higher GPD ones. don't know if that's true in all cases.

 

[ReefSparky]

I heard that lower filters with lower GPD generally work better than higher GPD ones. don't know if that's true in all cases.

Yes. By design the lower gpd units have a higher rejection rate. That means "purer" water. Not to say that higher gpd units produce inferior water, they don't.

I opted for a 75 gpd unit. It's producing its first water as we speak. It's been flowing (trickling) into a 5 gal bucket now for about 10 min's and there's a couple of inches of water. I hear the waste water ripping down the drain, though.

 

[ReefSparky]

BTW I should mention, I bought a Typhoon from "H2OGuru" on eBay, it's a 75 gpd unit. I ordered it Saturday, and it came UPS today, Tuesday. It's very impressive by appearance. I've read quite a bit and have seen a bit on John Guest fittings, the type employed by this manufacturer; and they're even more impressive in person. To think that only about 10 years ago you had to use a compression fitting which was a one-shot deal, deforming the copper in the process--now a John Guest fitting allows you to stick the water line in, and you're done. All this in a reusable unit. You can pull it out if you like, then put it right back in and zero leaks.

As far as the RO/DI unit goes.. . it came with an asov, and a float valve, delivered, UPS for a little over $190. $169 plus $25 shipping. Although I don't have a TDS meter, the output is impressively clear, tasteless and completely odorless.