brown scum in my tank

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kevin1786

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I've had my tank for 6 weeks now and i keep getting this brown scum on all the ornaments. Can someone tell me what this is and how to get rid of it. I have a 60L tank with 3 guppies, 5 neon tetras, 2 dwarf gwarmis, 2 corydoras. I'm useing a tetra tec easy crystal filter box 300 and my tank light is on for about 5 hours in the evening. Can anyone help. Thanks
 

Butterfly

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Those are probably diatoms. most new tanks go through this stage. If my conversion is correct that is a 15 gallon tank and its a little over stocked. Do you have a water test kit yet? If not you can get a coupon on from petsmart for the aquarium pharmaceuticals liquid testing kits. They are great. If you have a kit could you tell us what your water test readings are ammonia, Nitrites and Nitrates)
Welcome to FishLore. Stop by the welcome forum and let us welcome you properly
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Eskielvr

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Butterfly, could you give me more info on Diatoms? Are they beneficial/desired? Does it indicate anything regarding the cycle? You probably remember my posts about my 5 gallon not cycling. I'm finally starting to notice a lot of brown stuff appear on the decoration and gravel, but just thought it was algae. My tank is still trying to cycle with high ammonia levels.
 
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kevin1786

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I have a 5 in 1 test kit and the readings are as follows. NO3 - 15mg, NO2 - 0mg, GH - 6, KH - 3 and PH - 7
 

COBettaCouple

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kevin1786 said:
I have a 5 in 1 test kit and the readings are as follows. NO3 - 15mg, NO2 - 0mg, GH - 6, KH - 3 and PH - 7
They're convenient, but the test strips have a reputation for not giving the most accurate results a lot of times and that test isn't giving you ammonia (NH3/NH4+). A lot of fishlore members use the API master test kit (freshwater) that Butterfly mentioned: . For the NO3 (nitrates) and NO2 (nitrites), it should be giving you ppm rather than mg. If those results are accurate, you might have a 0ppm for ammonia & have a cycled tank.

https://en.wikipedia.org/wiki/Diatom - a little info on diatoms.
 
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kevin1786

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I do have a NH3/NH4 test kit it's about 0 - 0.25mg/l over a two week period (between water chages). Thanks for the info guys.
 
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