white sand looking stuff on back tank walls

[genzod66]

it comes of if you scrub hard ,looks like pretty good size sand pellets

fish and water parameters are great??

[CaliforniaDreamer]

Sounds like small tube worms. Very normal.

[genzod66]

yes what the owner of lfs said thanx,should i leave them???

[capn_hylinur]

Originally posted by genzod66
yes what the owner of lfs said thanx,should i leave them???

yes, they are good water filterers.

[DrBegalke]

could actually be calcium carbonate precipitation, essentially oolitic sand.

[coast2coast7390]

are they spiral shaped...if so thats what they are...tube worms...your normal filter feeders...if you dont like them take a razor or a flexible paint scraper to them...your main consern is prolly to keep them off the viewing pannels

[Radioheadx14]

yeah i have those on the back wall too... and popping up on my rocks