White particle growing on tank glass

[Corsair]

Dear all,

Recently I noticed the back portion of the tank glass has many small little white particle (about 1mm) growing on it. They are quite hard to remove, have to use a blade to scrape them off and it becomes powdery form when scraped. However, they keep on appearing back a week after I scrape the glass clean and they are growing in numbers. What exactly are they? Do anyone has similar experience?

Thanks for any advice!

[junyong84]

add a pic! tells a thousand words!

[35Cents]

Is it precipitation from too much calcium? try to list out your water parameters.

[shoelevy]

tink is initial stage of formation of coralline?

[Corsair]

Hi all,

Thanks for replying.

I took a picture of the white particles (a portion of them) at the back of the tank

My water parameter is as follows:

Temp: 28.5 deg C

PH: 8.27

Salinity: 1.023

Ammonia & Nitrite: 0 mg/l

Nitrate: 2.5ppm

Alkalinity: 9.3dkh

Calcium: 388mg/l

Phosphate: 0.25ppm

[shoelevy]

hm...i can't figure out wat they r

anibody?

[Eric]

Hi all,

Thanks for replying.

I took a picture of the white particles (a portion of them) at the back of the tank

My water parameter is as follows:

Temp: 28.5 deg C

PH: 8.27

Salinity: 1.023

Ammonia & Nitrite: 0 mg/l

Nitrate: 2.5ppm

Alkalinity: 9.3dkh

Calcium: 388mg/l

Phosphate: 0.25ppm

Dont worry, no harm just some calcium precipitation.

Eric

[shoelevy]

wat causes this calcium precipitation?

too much calcium and too little Mg?

[Eric]

wat causes this calcium precipitation?

too much calcium and too little Mg?

Could be calcium high, KH low.........

[Corsair]

Thanks for replying!