This may be a dumb question but I have to ask. On an ro/di system is it possible to have a reading of 0 and still have silicate or chloramine/chlorine present in the water? Or does zero truly mean zero. Trying to troubleshoot light algae dusting that is continuing to present on my glass. Thanks
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- Thread starter fener103
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Algae on glass is going to happen... usually appears faster based off phosphates which can be caused by a number of things. Feeding being one also storing your water in a non food grade container can pull phosphates from the container. Check your phosphates first
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Yep...what Brandon said. I honestly don't believe that zero means absolute zero. There may be trace that the meter can't detect. Algae on glass....especially brown algae is also a part of a cycling process. How old is the tank?
The tank is a year and a half old. So I dont think its from the cycling process. I have had this problem since the tank was set up that every day or other a light dusting shows up as a mini bloom, sometimes even timed with weekend water changes. I saw the email from BRS suggesting that more municipalities were using chloramine/chlorine as a secondary disenfectant to water and was curious if I was seeing an ammonia spike from that. All my prefilter, carbon and the DI are maintained and are less than a year old. The RO membrane is over a year. I run small amounts of carbon that is changed monthly and have just last week started running GFO to see if it could be the phosphates. Tank is 120 gallon with a 30 gallon sump, I generally change 10 gallons of water every weekend. I have a total of 9 fish and only feed once per day most often with new life spectrum pellets which is gone in a matter of minutes and a sheet of nori for the tangs about every three days. I run MM LED with blues on for 9 hours per day and whites for 7. For testing nitrates I am using salifert and see nothing even at the low level testing. Dose BRS 2 part ALK is running at 9 DKH and calcium at 450. I might break out the old hanna checker to try to get a phosphate reading but the last time I checked it ( I dont remember the exact reading) but it was low.
