brett2003 Posted July 21, 2013 Report Share Posted July 21, 2013 Good morning all, I posted here a while back about setting up a nano to replace my repurposed AR620T. (viewtopic.php?f=5&t=60547). Anyway. I ended up not getting either of the tanks I was looking at, and instead got a custom set up, and just transplanted everything to the new tank (inc live rock etc) a week ago. The problem is that the water is faintly cloudy. This was always a problem with the AR620T, but I just put that down to the substandard filter and lack of skimmer. Now it has a better filter (previous was 550L/hr for a 130L tank with minimal mechanical media, now it's 750L/hr for a 110L tank with a proper sponge), and a skimmer (a crappy little Dymax, but still yielding cloudy yellowish skimmate, so I assume it's at least partially working) The water is RO/DI, the phosphates do not register on my test kit (so less than 0.25ppm), and nitrates are only 5ppm. There *does* seem to be a silicate issue, based on the brown dust algae growth (going to get some Astraea to deal with that, I hope) Any thoughts as to what's causing it? By contrast, my freshwater is crystal, crystal clear. Quote Link to comment Share on other sites More sharing options...
livingart Posted July 22, 2013 Report Share Posted July 22, 2013 Maybe a bacterial bloom, have u tried running carbon for awhile. What is substrate? Quote Link to comment Share on other sites More sharing options...
brett2003 Posted July 22, 2013 Author Report Share Posted July 22, 2013 There is indeed carbon in the filter. Substrate is crushed coral sand. I assumed it was a bloom, but I have no idea what they'd be feeding off in such a low-nutrient, low-bioload system. Quote Link to comment Share on other sites More sharing options...
livingart Posted July 22, 2013 Report Share Posted July 22, 2013 There is indeed carbon in the filter. Substrate is crushed coral sand. I assumed it was a bloom, but I have no idea what they'd be feeding off in such a low-nutrient, low-bioload system. I have always found you get a small cycle when moving tanks, how often do yñu replace carbon? Quote Link to comment Share on other sites More sharing options...
livingart Posted July 22, 2013 Report Share Posted July 22, 2013 Moving substrate can cause some problems as a bed deeper than 3cm can contain anaerobic bacteria Quote Link to comment Share on other sites More sharing options...
brett2003 Posted July 22, 2013 Author Report Share Posted July 22, 2013 The carbon is a new addition (maybe 10 days). The bed was about.... 1.5cm thick in the old tank, and about 2cm thick in the new (due to differences in base size). Quote Link to comment Share on other sites More sharing options...
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