refuguim

[witz]

wonders izit ok if the sand in refuguim turns black

[fangtooth]

sorry i cant answer the question. but prepare to get yellow card from ref AT because the foul on your thread.

[Matt06]

I suggest you must as well don't reply and wait to see...

[Matt06]

It might still be ok, can you be sure if it is black of dark brown? Anyway, you might like to grow some plants as your sandbed might be too thick... instead of exporting nutrients, you might be factory-produce Hydrogen Sulphide which is even more toxic than Ammonia..

[witz]

my dsb is abt 3 to 4 inch,by the way i already grow macro algae inside the refuguim......some pple advice me to leave it....shld i change the sand bed

[FuEl]

The black colouration is a sign that your deep sand bed is maturing. Leave it be. Nothing to be worried about. Hydrogen sulphide buildup does not occur as rapid as you think.

[witz]

tks for the info fuel....can u guys tell me wat is the meaning of the small(warn) massage)on the left side of my topic

[lightningstrike]

that's the yellow caed / red card system for poorly descriped topics. read the pinned down thread.