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Old 01-10-2013, 06:03 PM   #1
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need help with rust looking sand and rocks

Hello I was told that it looked like red slime by a fish store .they sold me suff call (red slime remover ) I dosed the tank like the package said . It seamed like it did nothing . so they sold me another brand (chemiclean) , dosed tank per package . it has been two months now and its still there. make tank look bad . I have the water tested every week and do water 20% changes every other week. water tests good . i have chemi pure elite phosphate and silicate remover in sump .lighting is about 5 months old and run them about 7 hours aday .i have attached a pict . any ideas what it could be and how to get rid of it , so my tank will look nice and clear again . thanks
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Old 01-10-2013, 06:11 PM   #2
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Does it detach easily from the sand? Try using your siphon hose to suction it out when you do water changes and start doing changes every week. Suction it out as you go.
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Old 01-10-2013, 06:23 PM   #3
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Yes that's cyno from what I can tell from the pic its caused by excess nutrients low flow and lighting ...what's your tank specs size bioload feeding schedule etc.......
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Old 01-10-2013, 06:24 PM   #4
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Btw do you use rodi water or tap water?
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Old 01-10-2013, 06:39 PM   #5
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tanks is a 110gal with 20gal sump refugium i feed two little cubes of frozen reef caviar every other day. i little algae strip every day. 1 fox face , 2 clown, 4 green cromies, 1 mimic tang,1globie,1 green mandrain,1srepant star, 1 banded shrimp,5 hermit crabs, couple snails and little neon blue fish . i get my water from local salt water fish store . and it is ro di , same as they use at store . as for flow i have 3 power heads . in pict . if i fan the sand it disperses in water and settles again . i can use the power head to blow rocks clean and in couple days they look bag again . thanks
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Old 01-10-2013, 06:42 PM   #6
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I would just start doing weekly changes and siphon it off your sand. I had an outbreak about 6 weeks ago. I siphoned it off the sand and rock every week along with a 20% change, and also added a protein skimmer on my tank. I nearly have it all gone now. There is still some growing on the rock.
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Old 01-10-2013, 06:43 PM   #7
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You aren't over feeding. I feed half a cube every day and a strip of seaweed and also drop a couple of pellets for my crabs. And mine is almost gone.
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Old 01-10-2013, 07:30 PM   #8
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That looks like diatoms to me, not cyano.
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Old 01-10-2013, 07:42 PM   #9
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That looks like diatoms to me, not cyano.
+1 I certainly hope it's diatoms... Otherwise I am dealing with a massive cyno outbreak which I would prefer not to happen


I say diatom
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Old 01-10-2013, 08:03 PM   #10
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Cyano or diatoms, neither are reason to worry. The diatoms will burn out as soon as their food source disappears.
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