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    RO/DI

    RO prefilters and carbons should be replaced every 6 months like clockwork regardless of usage or whether they appear dirty or not. The reason for this is twofold, one is once the chlorine has been adsorbed by the carbon you are susceptible to bacterial and virial growth inside the filters and...
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    brown algae

    Have you checked the TDS of your RO/DI water? How long since you did any maintenance on the unit? Sounds like diatoms which could be a sign of exhausted DI resin. You need to test the tap water TDS, RO only TDS and RO/DI TDS to troubleshot it. You might also want to test your storage/top off...
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    Lighting Questions

    One fan blowing in and one out is a waste of a fan. You only get the CFM of a single fan. The second fan only moves the same air the first fan sends it and no more. This is true if the canopy is enclosed as mine is. Two fans, one in each end both blowing in and equal sized or larger exit holes...
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    need input on sumersible pump 900GPH

    Ocean Runner 3500 or Eheim 1262 would be my choices in that order. I have 4 OR pumps in my systems and have been very happy with them. The prices have increased recently though and the cost difference between them and Eheims is much closer so Eheim would also be a good choice now. Power...
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    ro/di system help

    The smaller the micron size the better they filter out the big stuff and protect the RO membrane itself. Better units like Spectrapure use a 0.5 or 0.2 micron prefilter followed by a 0.5 or 0.6 micron Matrikx+1 20,000 gallon Chlorine Guzzler carbon block. I would look for no larger than a 1...
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    Dont know what koralia pump to buy? please help :)

    I installed a K1 in a 16G bowfront and its worthless. I have a K3 in a 29G thats about perfect for SPS and 2xK4s along with a closed loop in my 100G and again they work great. I would try 2xK2's or a single K3 at a minimum.
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    r/o water system

    You can do it yourself easily. You have numerous choice on installation from as simple as a kitchen or bathroom faucet adapter which can be removed when not in use, a wye or garden hose type splitter on a washing machine coldwater feed line, a simple bolt on self piercing valve under the sink...
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    Quarantine and Hospital Tanks

    Most of us use the same tank for both QT and hospital so we keep things simple. Since there is the possibility of adding medications or of fish having parasites or disease its best to keep everything in the tank either disposable or cleanable with bleach or disinfectants. I use several pieces of...
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    Kent RODI gasket

    Any LFS that sells Kent products should be able to get it for you. Another option would be an industrial supply warehouse that sells gaskets and seals. Most of them have O-ring kits where they can make them in any size you want in about one minute. If that does not work a new RO housing should...
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    RO/DI filters

    If your prefilter plugs more often it might be wise to use a finer micron rating like a 1.0 or even a 0.5 micron absolute rated prefilter so any sediment is trapped in the prefilter and not passed on the the carbon blocks. That way the carbon blocks will still go the 6 months without plugging...
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    RO/DI filters

    Make sure to replace the prefilter and carbons every 6 months like clockwork and to disinfect the filter housings at least once a year during a filter change to keep the unit in good shape.
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    RO/DI filters

    The bladder tank does not normally lose its pressure, its a big heavy rubber balloon and does not go bad easily. You production is probably related to plugged filters causing lower water pressure or water temperature. Those are the two most influential factors in RO production. Replace the third...
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    What's your Tap Water TDS?

    Phoenix and the surrounding cities have very hard water and high TDS due to the sources, the Colorado River(which is 200 miles away and delivered by an open canal which causes massive evaporation and concentration of solids) and the Salt River ( three guess as to how it got its name and the...
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    What's your Tap Water TDS?

    835 TDS tap water, 7.7 RO only and 18.2 megaOhm resistivity after MaxCap dual DI.
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