Whats this purple thing on my sandbed?

[weishun]

Can anyone tell me whats this on my sandbed? I got this after my red seafence fell to the sandbed and was left there overnight untill i removed it in the morning. Its the same colour with my seafence. Can someone tell me whats it is?

[weishun]

Another picture of it.

[weishun]

Its kinda slimy and it got "hair" trails moving leh...

[roidan]

red slime algae aka cyanobacteria

[Nautical]

sorry to steal this thread, but thought can share some info.

yes, i got this cyanobacteria thing about 2 to 3 weeks ago.

grew quite ugly as the days passed.

i ended up taking off the top layer of sand.

what causes it ?

and is there a better way to prevent and if already "kena", how to have it removed ?

[SharkBait]

sorry to steal this thread, but thought can share some info.

yes, i got this cyanobacteria thing about 2 to 3 weeks ago.

grew quite ugly as the days passed.

i ended up taking off the top layer of sand.

what causes it ?

and is there a better way to prevent and if already "kena", how to have it removed ?

Its part and parcel of new tanks. Its caused mainly by high phospates and nitrates. To prevent it, increase water flow and lower your nutrient levels. If its already in your tank, suck it out and increase the water flow. Shorten your photo period if need be.

[lightningstrike]

excessive feeding oso contributes to cyano. u might wanna keep that in check.

[Siput]

Excessive feeding and/or increased bio-load...my tank was ok since Feb, but recently added some inverts and a couple more fish, and bang, kena...will be doing water change this weekend...

[weishun]

hmmm i think i will most likely suck up my top layer of my sand. Then see what happens....

[Hondace]

use Ultra Life : Red Slime Remover. the red slime should die off the next 2 days.

However, long term solution is to reduce feeding & improve the water flows.

[Golden Tooth]

Better to remove the source of it.

[ryz]

cyanobacteria caused by insufficient water movement and such high bio load that the filtration system cannot manage

[weishun]

My tank water flow very strong leh... i using a 2500l/hr pump as my return pump for my sump leh... is this powerful enough to give good water flow?

[Golden Tooth]

Don't think it's enough leh...

[typrobin]

My tank water flow very strong leh... i using a 2500l/hr pump as my return pump for my sump leh... is this powerful enough to give good water flow?

2500ltr pump? unless it is a pressure rated pump if not definitely not enuf for your 3ft tank...i am using a 3000-4000 pump and still not satisfied, getting the new rio seio soon...

if my overflow down pipe is big enuf, i will prolly go for the rio hyper flow 32hf, 6000+ltr...ppppphhhhhhhheeeeeeeewwwwwww...no need wavemater liao...

i think your tank is super new right?? think the bio load is too much for your tank...try getting phosphate remover(best if u get rowa or contra with a FR) and do water change more frequently to reduce nitrate...feed your fishes less...

[ryz]

yea considering the head loss think the crrent created by the return is very minimal only.

[weishun]

Ehh i have phos remove liao, i using phosguard by seachem. Plus i got no fishes in my tank currently cos i thinking of have a reef only tank. So far i haven change water yet cos my water now still under cycling after i switch from coral chip seabed to deep sand bed.

[typrobin]

and all your corals in your tank now?? very dangerous...better do a little water change 1st....maybe 20%...

[moron_clown]

u may want to get a bag of rowaphos and a fluidise reactor to remove phosphates...it works.