Shouldn't you put that $0.02 towards something more sensible, like beer? *duck*
Is RODI really more expensive?
- Thread starter hilgert
- Start date
Shouldn't you put that $0.02 towards something more sensible, like beer? *duck*
kmbyrnes
New member
You are correct. I rounded off rather than up.
I was including my total cost ( sewer, taxes, fees ) as part of the cost. The actual water portion is about 25% of the total.
No matter how you look at it, home made RO/DI is substantially cheaper that LFS obtained.
The more water you need, the faster the payback.
Bent
I got nothin'
IMO, this is one of the better reasons not to drink RODI - it tastes like crap. And - wait for it - there's not a thing wrong with drinking plain ol' municipal tap water unless it also tastes like crap because of an elevated sulfer concentration.
My only concession to "treating" my drinking water is putting it in a glass milk bottle in the fridge so that it's cold.
I could argue against generalizing that the tap is safe.
http://news.nationalgeographic.com/...-safety-west-virginia-chemical-spill-science/
Especially when your drinking water is controlled by dirty government agencies and big corporate conglomerates that could care less about your health
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Got a co-op doing a discount club membership type deal at .20/G for RODI, and .80/G for SW. But, you have to pay the membership fee yearly. The other LFS are no where near that, more like 1.00/G for SW, and .50 for RODI.
Remember to add the fuel costs for the trip, and the cost of the various jugs, and of course the hassel factor.
Remember to add the fuel costs for the trip, and the cost of the various jugs, and of course the hassel factor.
Dustyboots
New member
A marine tank is pricey! IMO if you have the jack to buy the aquarium, stand, filtration system, lighting, live rock, substrate, salt, food, and most importantly expensive livestock, a RODI is an essential if not the most important part of maintenance. This way you're not going to have to worry about buying RODI water or mix where you have no idea of the parameters, you are in control. A good RODI will give you years of good water and mix, and no worries.
callsign4223
Well-known member
It wasn't the cost factor that convinced me to get an ro/di system, it was the convenience. Who wants to haul around buckets in a car when you can just grab some water from the garage.
Oceanblues
New member
I setup my RODI unit a few years ago and can't believe I bought water for so many years. Not sure if it's cheaper but much more convenient. Only thing is you need to change the DI resin about every 200 gallons to keep 0 ppm. I buy the resin and replace it myself about $8 per change. I've also heard the drinking DI water is not good but not sure if it's a myth or not. My unit has a DI bypass which feeds our drinking water.
hilgert
Excessive Minimalist
200 gallons seems awful quick to change out DI. What is your TDS coming put of the RO membrane and into to the DI? What is your RO membrane size (gallons per day)? Incoming water pressure?
Reason I ask is that I once tried a high-throughput RO membrane (150GPD) and it just ate DI cartridges since it had a low rejection ratio. I've since gone back to a high-rejection RO membrane (75GPD) and I can easily get 1000 gallons of RODI before my TDS even thinks about going above zero (I typically just replace around 1000 gallons proactively).
Buckeye Hydro
.Registered Member
The rejection rate on a 150 and a 75 are not that different - there may have been something else going on (like the 150 wasn't seated).
Russ
hilgert
Excessive Minimalist
It was not your 150
I'm pretty sure it was seated correctly. I asked the vendor and they said "oh, yeah...those go through a lot of DI". Anyway, 75GPD is fine for me, and they switched it out for free.
Buckeye Hydro
.Registered Member
"Republic of Texas" - I love it!
hilgert
Excessive Minimalist
Laugh now...just wait until we secede. Meanwhile, we've already started on "border protection":
Texas Constructs U.S. Border Wall To Keep Out Unwanted Americans
Buckeye Hydro
.Registered Member
If that happens, I'm moving to Texas!
I see it as convenience not having to lug that water everywhere gas to get to a LFS to get water every time I need it
Especially for my auto top off!!
Also have the drinking faucet on my Ro unit so we refill water bottles all the time..... If you ever change the out old filter you will know what you drinking and that is a priceless peace of mind !!
Especially for my auto top off!!
Also have the drinking faucet on my Ro unit so we refill water bottles all the time..... If you ever change the out old filter you will know what you drinking and that is a priceless peace of mind !!
sromero287
New member
Hi there, maybe i will be in problems in my next question "why all the forums about everything all the members when wants some object, coral, equipment or anything always are with FEAR from asking their wife's or domestic partner in reference to get it, buy it or just lay it away? WHY, in my case i have to kill my ... really hard to get my stuff and additional i have to obtain permission, authorization or approval from my wife? Do you guys have not enough courage just to get it? Not saying just burn all the income in toys cause thats a serious problem like hard gambling or addictions.
Please don't want to hurt feelings but it sounds kind of weird " i have to convince my wife that is need it for the tank" hellooooo if u are in this hobby u know that it is NOT the most economical hobby, but please think for a second "when" your wife, girlfriend or whatever u want to call her, asked u permission to go to a hair salon, nails, make up, accessories to looks great for "us" , in my case i never listened the "may i" or "im going to, its ok? But apparently if i need a new skimmer cause my old one is not performing or just is the Latest one in the catalog, digital and operated by satellite "THEN" i have to probe my wife about nitrates, phosphates and all the rest ones to see the remote possibility and get her approval? I am sorry forum but
GIVE ME A BREAK AND COME ON GUYS!!!!!!!!!!!!!!!!!!!!!!
U know what, if theres something in your LFS that take u 15 min every visit, you already saw all the youtube videos about it, checked all the forums and JUST U WANT IT, next friday u get paid GO FOR IT!!!!! Dont wait more, cause u deserve it, when got home if theres a minimum objection dont pay attention and just ask how much she paid in her last hair color change, botox or any kind of beauty product you will enjoy my friend the best silence ever. DONE.
(try it at least one or twice a month) good luck!!!!!!!!!
Please don't want to hurt feelings but it sounds kind of weird " i have to convince my wife that is need it for the tank" hellooooo if u are in this hobby u know that it is NOT the most economical hobby, but please think for a second "when" your wife, girlfriend or whatever u want to call her, asked u permission to go to a hair salon, nails, make up, accessories to looks great for "us" , in my case i never listened the "may i" or "im going to, its ok? But apparently if i need a new skimmer cause my old one is not performing or just is the Latest one in the catalog, digital and operated by satellite "THEN" i have to probe my wife about nitrates, phosphates and all the rest ones to see the remote possibility and get her approval? I am sorry forum but
GIVE ME A BREAK AND COME ON GUYS!!!!!!!!!!!!!!!!!!!!!!
U know what, if theres something in your LFS that take u 15 min every visit, you already saw all the youtube videos about it, checked all the forums and JUST U WANT IT, next friday u get paid GO FOR IT!!!!! Dont wait more, cause u deserve it, when got home if theres a minimum objection dont pay attention and just ask how much she paid in her last hair color change, botox or any kind of beauty product you will enjoy my friend the best silence ever. DONE.
(try it at least one or twice a month) good luck!!!!!!!!!
igot2gats
Deeeetroit Basketball!
Not only this, but what if you're low on saltwater or RO/DI water, or have a tank emergency, and your LFS is closed?
This is hands down the reason to have an RO/DI unit, IMO.
Buckeye Hydro
.Registered Member
It was not your 150
I'm pretty sure it was seated correctly. I asked the vendor and they said "oh, yeah...those go through a lot of DI". Anyway, 75GPD is fine for me, and they switched it out for free.
Our 75's are spec'ed at 50 psi
Our 150's are spec'ed at 65 psi
People seem to forget/overlook this difference.
Russ
igot2gats
Deeeetroit Basketball!
I think the argument here isn't necessarily the cost ($) savings it is to have an RO/DI unit. It's wheather it's cheaper (convenience) to save time, energy of making your own RO/DI water at your house vs getting it at a store or LFS.
I could be wrong, but that's my interpretation of this discussion.
Spar
New member
this is how i interpreted it too. my view is it just depends on your RODI intake. if i had a nano 5g tank, i would probably just buy a couple jugs to last me a couple months. but even with 30g+ tanks, you lose a lot of water quick; ive never done the math, but surely it is cheaper to just have your own unit... hence the debate here I suppose :bounce1:
