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02/09/2018, 02:03 PM | #1 |
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Join Date: Feb 2018
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Beginner/Used RODI unit.
I’m brand new to the saltwater hobby. I’ve kept freshwater for 10 years. I have a empty 75g tank that I’ll be using for my saltwater setup. My first purchase is going to be a good rodi unit. Here is where I have a questions.
A cowoker gave me a 4 stage rodi unit for free. 3 large filters on the bottom and one on top. He doesn’t know anything about this system. The brand is Kent Marine HI-S Maxxima. It’s a bare bones system. No pressure gauge and tubing needs replaced. How can I figure out how manny gallons this unit will do? How can I upgrade this unit to make it really good? Is it worth upgrading? Since I wanted to add a pressure gauge, tds meter, flush system. Not sure what else I’ll need. Or should I just buy the refurbished Spectrapure 90G per day system for $180? Thanks so much everyone. |
02/09/2018, 02:35 PM | #2 |
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Join Date: May 2012
Location: Maryland
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I used to have one.
I believed it's up to 75GPD depending on the membrane installed (the one on top). It's perfectly fine to use it and add some upgrade to it. You can even upgrade to the 150GPD with the BRS upgrade kit. You will need to replace all filters and a new membrane. Auto shut off is a must! |
02/09/2018, 02:45 PM | #3 |
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Join Date: Feb 2018
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What is auto shutoff?
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02/09/2018, 02:59 PM | #4 |
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Join Date: Feb 2018
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The unit does not even have any tubing on it. I would have to figure out what lines go where.
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02/09/2018, 03:02 PM | #5 |
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Join Date: May 2012
Location: Maryland
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02/09/2018, 03:16 PM | #6 | |
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Join Date: May 2012
Location: Maryland
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Quote:
appeared very complicated, but it's really simple. water enter into first canister (sediment); out of first canister to 2nd canister (carbon), out second canister to membrane; 1 out of membrane to third canister (DI risen); 2nd output of the membrane is waste water; out of third canister to reservoir. Post pics so we can walk you through it. Once you get the basic setup, you can add the pressure, auto shutoff, tds, etc. |
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02/09/2018, 03:32 PM | #7 |
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Join Date: May 2012
Location: Maryland
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Typical Diagram;
https://blog.marinedepot.com/educati...i-system-works this looks like your? https://www.youtube.com/watch?v=UVC7_xoVHKU |
02/09/2018, 04:35 PM | #8 |
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Join Date: Feb 2018
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Thanks for all the help! Now what filters should
I buy? It’s for a 75g tank. Do you think it’s cheaper to upgrade this one or just buy a new unit for $200? |
02/09/2018, 05:56 PM | #9 | |
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Join Date: Jul 2014
Posts: 308
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Quote:
All you really have is the shell to the ro unit. The housings are all basically the same other than some are clear and some are not. |
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02/10/2018, 12:43 AM | #10 |
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Join Date: Jan 2006
Location: Westminster, CO
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It really depends on your source water. Are you on well water? City water with Chloramines? High Silicates?
Certainly would help to know where you get your water to take a gander at the water quality report (if you are on city)
__________________
Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k. |
02/10/2018, 11:49 AM | #11 |
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It’s city water.
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02/10/2018, 12:35 PM | #12 |
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Join Date: May 2012
Location: Maryland
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Most expensive part of the RODI is the membrane $40 (but lasted 3-5 years depending on water source).
$30 for replacement filters. (you can buy bulk and it's a lot cheaper!) https://www.bulkreefsupply.com/brs-4...SABEgIWu_D_BwE When I first dived into reefing, I have no idea what's the RODI is, bought a used one and was overwhelmed. I didn't even know about reef clubs until a few years later. I learned and make many mistakes along the way, but you learned for mistakes. Anyway, it's really up to you as to whether to buy a new unit or work with what you have. To me the RODI are pretty much the same regardless of brand. However, some have better quality than other. Since you're using city water, go with a 5 stages unit such as this if you want to go with the new unit. There are a bunch of vendors on here as well. https://www.bulkreefsupply.com/5-sta...ef-supply.html |
02/11/2018, 11:28 PM | #13 |
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Location: Westminster, CO
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This means nothing. Please give actual specific details, like where you live and who you send money to for water.
__________________
Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k. |
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