Weird growth in tank

[inveritas]

Hey guys,

I've noticed this weird growth in my tank. Anyone knows what it is?

ImageUploadedByTapatalk1392382089.345661.jpg

Thanks in advance!


Tank Dimensions (LxWxH, specify units): 40L

Number and type of Lighting (FL/PL/MH) : LED

No. of hours your lights are on : 6


CO2 Injection Rate (bps) : none

Liquid fertilisers Used (Product name. E.g. Seachem Flourish) : Half dosage of flourish and full dosage excel

Other additives (Product name. E.g. Seachem Prime) : Prime

Type of Filter (overhead/internal/canister, Product name/model if possible) : Waterfall, 50gph

When was the filter last washed : 1 month ago

Filter media used : Cartridge (mechanical with carbon)

Age of setup (i.e. since initial setup or last major re-do ) : 3 months

Water change frequency : weekly

Amount changed : 25%


Water surface movement (None/gentle/turbulent) : gentle

Circulation (None/gentle/turbulent) : gentle

Tank Temperature : 26-28



Chemical Properties (Fill what you can)

No data but fish show no signs of stress

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Bioload (Number and type of fish and plants)

15 guppies

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Describe your problem :

Weird growth (refer to pic)

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[Henlek]

This one is staghorn algae my highest bet.

[Urban Aquaria]

Thats slime mold... a sort of fungus species. The spores probably hitchhiked in on plants or equipment that you recently added into your tank.

The slime mold feeds mainly on organic matter in the tank, so it may appear to move around as it consumes stuff. Best way to remove is by just manually picking it out. Cleaning the tank surfaces, decrease feeding and doing more frequent water changes to reduce the amount of excess organic matter in the tank also helps too. Once there is no more "food" for it to consume, it'll naturally just die off on its own.

You can read more about it here:

http://waynesword.palomar.edu/slime1.htm