Blue Z Reef Posted December 31, 2016 Share Posted December 31, 2016 (edited) Idk what's wrong...I swear I've tried everything at this point! Here's what I have setup: Pre filter culligan filter -> aquatec 8800 booster-> 3x carbon blocks 1 micron and one is .5 micron I think from BRS -> 100 gpd Dow filmtec -> 3 DI canisters I just swapped to the 100 gpd hoping the rejection would be better...it's worse! From the tap reading is 120ish. After membrane only getting down to like 20! DI resin takes it to 0 but I burn through resin like no tomorrow! I was using a 150gpd Axeon membrane and it was only getting it down to like 10 TDS. Pre filters from BrS are less than a month old. I have an 800cc fast flush for the 100 gpd and was using a 1200 with the 150gpd. Pressure with booster is at 85 psi. What's wrong here? 98% rejection should put my output around 4 tds. Edited December 31, 2016 by Blue Z Reef Quote Link to comment Share on other sites More sharing options...
Blue Z Reef Posted December 31, 2016 Author Share Posted December 31, 2016 Oh an new membrane was properly flushed for half an hour. I always flush for at least 15 mins prior to production as well. Quote Link to comment Share on other sites More sharing options...
Kshack Posted December 31, 2016 Share Posted December 31, 2016 You need to make sure the flow restrictor matches the membrane. Whoever you bought the new membrane from should be able to get you the right flow restrictor. Also, might be a good idea to measure the amount of product water to rejection water for their information. Ken Quote Link to comment Share on other sites More sharing options...
Blue Z Reef Posted December 31, 2016 Author Share Posted December 31, 2016 I know 800 is the right flow restrictor for the 100 gpd I'll have to check the product/waste ratio and product speed a little later Quote Link to comment Share on other sites More sharing options...
Blue Z Reef Posted December 31, 2016 Author Share Posted December 31, 2016 Haven't checked flow rates yet as I'm watching the lil guy this afternoon but I did check the TDS out of the membrane and it's down to 10 but holding there. My first DI resin chamber has changed color about 2" already ???? Uggg this things expensive to run Quote Link to comment Share on other sites More sharing options...
Blue Z Reef Posted January 1, 2017 Author Share Posted January 1, 2017 Ok, here's what we're producing/rejecting Measured how long for 100mL Product = 30 sec Waste = 7 sec So ratio is 4.3/1 waste/product Converting this to gallons, with the 100 gpd membrane I'm only outputting 76 gal at 85psi. Given it is cold out and my unit is in the garage this may be effecting the waste/product some, but most people don't report any higher TDS, just lower output. Still stumped ???? Quote Link to comment Share on other sites More sharing options...
Bicyclebill Posted January 1, 2017 Share Posted January 1, 2017 I'd pull the di offline and run the ro into the drain for a couple of hours. That's insanely high tds coming out of an ro membrane. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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