HELP! White bits in water

[diecast9]

It's been almost a month since I started my biocube 32 LED tank. Everything in it seems fine - parameters are almost perfect. Water itself looks clear. That being said, for some reason I can't seem to rid the tank of these white dots floating in it. It's been evident for at least 2 weeks I've done water changes and also reduced dry feeding the tank. It did not help. Any suggestion?

 

[DavidGraves]

What are your alk, cal, mag levels. Calcium precipitate?


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[diecast9]

Alk is 11 meq/L
Calcium is 360 dkh
Mag I don't know.. don't have a test for that yet

 

[JMorris271]

Could it be pvc shards that weren't remove by accident after assembly?

 

[diecast9]

to be honest.... I admit i made a mistake - not rinsing the tank first before adding the LR and sand and water.

But is PVC shards a high likelihood? If so, how would I get rid of it

 

[diecast9]

or do you mean shards coming from filter materials? I currently use a filter fad, filter floss, and the original stock carbon/filter pack.

Just changed them yesterday. Do I need to rinse those as well before adding to tank?