F;uff On Substrate

[LittleL]

im my male betta tank, there is this white, fluff growing on the gravel...? does anyone know what this is and do i need to worry about it and 'treat' it?? my betta looks fine and is swimming around and making bubble nests....

 

[catxx]

time to do a gravel vac!

 

[BWBettas]

Yup, usually caused by uneaten food going mouldy... will affect water quality so get it out and water change

Bret