Is my LFS taking me for a ride?

I know the pressure where I live is very low because I have had the city check it twice. It's only 45 psi. Where do you get a booster pump?
 
Well, Tengquen, after reading all the posts about the RODI, I will have to agree with the Beatles: you got a "Ticket to Ride." Hope, you got some peanuts with the bus ride.
 
Daniel Reef said:
Well, Tengquen, after reading all the posts about the RODI, I will have to agree with the Beatles: you got a "Ticket to Ride." Hope, you got some peanuts with the bus ride.
Click to expand...

Unfortunately, I agree with you. I found another LFS about 7 miles from me. He seemed a lot more down to earth. I asked him a few questions, some started to get technical, and he said "I don't claim to be an expert on that topic, but I can certainly try and find the answer. You are going to find in this hobby that there are a lot of opinions and some conflicting information. But that is the frustrating and the fun part of it. You learn as you go along what works best for you."

I liked that he didn't claim to be the "reef tank god" and say that if anyone doesnt agree with them, they are JUST WRONG!

Plus, he is moving his store to the other end of the plaza this month, and that is forcing him to break down a 200 gallon tank. Its full of 250lbs of live rock that he needs to sell fast and at a discount. Score! :spin1:
 
Interesting thread. I find if you are expecting your LFS to be as up on technology and as knowledgeable at contributors to this forum you will be sadly disappointed.

I have a good relationship with my lfs. Its small and I deal with the owner. He knows some things I don't and I know some things he don't. I did buy my own rodi unit however when he told me he doesn't have a TDS meter on his rodi.

I don't think the original lfs guy on this thread was out to screw anyone, he was just misinformed.

RODI unit ratings are always based on 77 F temperature, but mine from Spectrapure, a 90 GPD unit is based on 60 psi and 500 TDS. I guess thats not standard since I saw one post saying their rating was based on 50 PSI.

Its cold now, my pressure is only 40 PSI, though my water is clean at 70 TDS so I only get 60 GPD production.
 
Frogmanx82 said:
Interesting thread. I find if you are expecting your LFS to be as up on technology and as knowledgeable at contributors to this forum you will be sadly disappointed.

I have a good relationship with my lfs. Its small and I deal with the owner. He knows some things I don't and I know some things he don't. I did buy my own rodi unit however when he told me he doesn't have a TDS meter on his rodi.

I don't think the original lfs guy on this thread was out to screw anyone, he was just misinformed.

RODI unit ratings are always based on 77 F temperature, but mine from Spectrapure, a 90 GPD unit is based on 60 psi and 500 TDS. I guess thats not standard since I saw one post saying their rating was based on 50 PSI.

Its cold now, my pressure is only 40 PSI, though my water is clean at 70 TDS so I only get 60 GPD production.
Click to expand...

Thanks for your response!

I don't expect my LFS to be experts on everything. Thats exactly the problem for me. The original LFS guy is 1,000% sure that he is right and everyone else is wrong...when I am convinced that he is very mistaken (based upon everyone's responses, and especially the responses of 3 water techs from reputable rodi unit websites). So I can't help but wonder what else he is soooo sure about that is also wrong. Right or wrong, overreacting or not, I will never trust this guy. Thats just me. I'm glad I found another guy that was able to admit he is not an expert on everything. This is dissapointing since the original LFS is less than a mile away, and the new guy is 7 miles away...but at lesat I found someone that close.

FYI I did go out and buy a water pressure gauge. My pressure is at 70-72 psi, so my gpd should be fine. I'm in FL so the water never really gets that cold.

Also, in case anyone else is looking for a similar tank, www.drsfostersmith.com are not offering that JBJ deal anymore. I actually found it a few dollars cheaper here http://www.marinedepot.com/JBJ_28_G...h_Stand-JBJ_Lighting-JB71431-FIAQNCTS-vi.html
They said they are running the special til Dec 31. I'm going to buy it next week.
 
Do NOT use tap water in your first fill.

Do NOT use tap water in your first fill.

The impurities will leach into your LR and over time you are more likely to suffer from algae problems.
 
lordofthereef said:
I just sent an email to air water and ice. I will respond to this post by copying and pasting their response. Here is my original email pasted:

Hello,
I am writing to clear up some possible misinformation I have received in deciding on an RO/DI unit for my reef. I was under the impression that gallons per day ratings (ie 50gpd, 75gpd, 150gpd) were based on how much actual RO water is produced. In the example of 50gpd unit I would have expected to see 50 gallons of RO water produced in a 24 hour period of time. I have since been told that the gallons per day rating has to do with how much water is actually processed in a day meaning that in a 50gpd filter I am processing 50 gallons in a 24 hour period. Assuming a 90% rejection rate this leaves me with only 5 gallons per day of clean 0TDS RO water. To me this doesn't seem right and was hoping to clear that up.
Click to expand...

As promised, here is the feedback I got from Air Water and Ice. I am pasting this word for word as I received it via email. To those who do not want to read through it, the email basically states that whatever the rating of the filter is how much pure water is produced (ie a 75gpd membrane will produce 75 gallons of RO water per 24 hour period).

Hello Bela,

That's wrong. The GPD value does mean how much pure water can be made in a
24 hour period. Meaning, a 50 GPD unit can make up to 50 gallons of pure
water in a 24 hour period.

There are variables that can change this because each membrane is rated
based upon 77 degree (F) water at 50 psi. However, these variables only
make small changes unless you're at the extreme limits of the membrane.
For example; if your water supply was at 40 degrees and 50 psi, your GPD
would be cut in about half. In other words, if you had a 50 GPD membrane
with 40 degree water feeding it, you would only be able to 25 GPD.

The rejection rate refers only to the amount of TDS the membrane can
remove. In other words; if your tap water had a TDS of 300 ppm and you
have a rejection rate of 90%, then your RO unit will take down the TDS to
30 ppm. (TDS = Total Dissolved Solids, ppm = parts per million)

If you need any further information or explanation (or clarification),
please let us know.

Regards,
Don
Air, Water & Ice LLC
 
Thanks

Thanks

Thanks everyone for your responses and research. I'm going to stick with the other LFS guy that is farther away. I trust him a lot more. FYI this is the ro/di unit I ended up getting... http://www.bulkreefsupply.com/store...pd-ro-di-5-stage-chloramines-plus-system.html

I installed it this morning and it seems to be working perfectly. My tank and stand will arrive on Monday. I'm going on vacation for a while but I will set it up on the 1st and start a new tank post after I get it up and running.
 
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