Brown Out keeps recurring

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My tank is approximately 4 months old. Since last week my tank has a brown out every day. I clean it after work, when i get home the next day, all over again.

My 3X 150W mh are on from 10:00 till 15:00 every day. The lights have always been on a timer (with the same times0 and I've never experienced this problem.
Should i be worried?
My tank will be as murky as a dam, when i don't clean it every day, and its becoming a bit of a hassle.

My water parameters the day before yesterday =
Alkalinity = 7
PH = 8
Nitrite = 0
Nitrate = 2
Ammonia = 0

Temp range between 25 and 26.7.

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jacquesb

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Hi Lemar - no, you don't need to worry. You are most likely talking about some micro algae that grows on the tank's glass - only where the metal halides shine. I also have it.
And nearly guaranteed other reefers also has it.

What skimmer did you get in the end, Lemar? This would also make a difference - as the amount of nutrients in the water will be feeding the micro algae that's growing on the glass.

The fact that the tank's water become "murky" for a while when you clean the glass on the inside, is not a problem at all. This micro algae that you scrape off the glass acts as food for all filter feeders....
 
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Lemar how is your skimmer is it working properly and when last did you do a water change.
 
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I did a waterchange yesterday
I have a Reef octopus extreme Octx 160 rated 750l. I have to clean my cup every 2nd day, as it becomes very stinky and dirty.
What is the ideal skimming height? meaning where should the water level be?
Thanks for the input guys...
 
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mine is the same hight as the out let pipe. How is your feeding not to much.

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mine is the same hight as the out let pipe. How is your feeding not to much.

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I'm feeding twice a day, with an automatic feeder, so that it's consistent. The feeder's setting is such that the fish eats the food in about 1 minute (if not less). My water height of the skimmer is also the same as my outlet pipe. The water is bubbling in the cup, should i maybe try and set it so that it skims drier? will this make a difference?
 
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NOTHING wrong with THAT skimmer, Lemar!

It might just be that your tank still needs a WEE bit more maturing! :)
thanks jacques, so let's say it's still maturing, how long will these brown outs keep happening. We are going on holiday in 2 weeks time for 2 weeks. I will have someone checking on my tank every third day, but as it is, if I dont clean it everyday, by the 3rd day you wont' even see the fish? The person checking my tank, won't be able to do this every other day....
 

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