White ChalkBuild up on Glass

Reeferz412 · 11/28/2016, 10:23 AM

I believe this would be the proper place to ask this. I dose heavily on my frag system and I noticed a small white chalky build up on my glass. I thought nothing of it and used my scraper to clean it off thinking it was dead coralline. I noticed it was very difficult to get off and it came off like dust and disappeared into the water column. Two days later, where ever I scraped, the white deposit spread. I didnt really catch on until about 10 inches of my glass where I scraped is literally white with this deposit. Any ideas what it could be? I can provide pics if need be. I am not on my phone so I will need to log into tapatalk to provide. Thank you!

Reeferz412 · 11/28/2016, 10:24 AM

Let me add, the coral and fish in this tank are perfectly fine. This is just a huge eyesore.

Reeferz412 · 11/28/2016, 10:46 AM

I believe it is calcium precipitation from what I have been reading, and I did run out of magnesium last week.. could that be the problem?

thegrun · 11/28/2016, 10:57 PM

It certainly sounds like calcium precipitation, caused either from overdosing the two part or low magnesium.

BlackTip · 11/29/2016, 07:49 AM

It is precipitation. I had sheets of it in the sump when I was dosing 2 parts. You either overdosing or you have ions imbalance that cause the majority of the dosage to precipitate.

bertoni · 11/29/2016, 11:26 AM

The supplement might be precipitating if you are adding a very large dose in one shot into a small body of water. The baking soda version of the 2-parts is better about precipitation. If you dose into the main tank, that might help, too, assuming the supplement is going into a sump currently.

Reeferz412 · 12/04/2016, 12:24 PM

I dose into the overflow but large amounts. I could dose mag and stop dosing cal and alk until things level out?

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11/28/2016, 10:23 AM	#1
Reeferz412 Coral Hoarder Join Date: Mar 2011 Location: Miami, FL Posts: 2,247	White ChalkBuild up on Glass I believe this would be the proper place to ask this. I dose heavily on my frag system and I noticed a small white chalky build up on my glass. I thought nothing of it and used my scraper to clean it off thinking it was dead coralline. I noticed it was very difficult to get off and it came off like dust and disappeared into the water column. Two days later, where ever I scraped, the white deposit spread. I didnt really catch on until about 10 inches of my glass where I scraped is literally white with this deposit. Any ideas what it could be? I can provide pics if need be. I am not on my phone so I will need to log into tapatalk to provide. Thank you! __________________ Alex FMAS Member Current Tank Info: 400 Gallons of frags... 30 gallon Deep Blue mixed reef ... 70 other tanks throughout south FL

11/28/2016, 10:24 AM	#2
Reeferz412 Coral Hoarder Join Date: Mar 2011 Location: Miami, FL Posts: 2,247	Let me add, the coral and fish in this tank are perfectly fine. This is just a huge eyesore. __________________ Alex FMAS Member Current Tank Info: 400 Gallons of frags... 30 gallon Deep Blue mixed reef ... 70 other tanks throughout south FL

11/28/2016, 10:46 AM	#3
Reeferz412 Coral Hoarder Join Date: Mar 2011 Location: Miami, FL Posts: 2,247	I believe it is calcium precipitation from what I have been reading, and I did run out of magnesium last week.. could that be the problem? __________________ Alex FMAS Member Current Tank Info: 400 Gallons of frags... 30 gallon Deep Blue mixed reef ... 70 other tanks throughout south FL

11/29/2016, 07:49 AM	#5
BlackTip Registered Member Join Date: Jan 2015 Posts: 1,598	It is precipitation. I had sheets of it in the sump when I was dosing 2 parts. You either overdosing or you have ions imbalance that cause the majority of the dosage to precipitate. __________________ 325G DT. 100G sump. In-sump refugium. SRO-5000SSS. 2 Gyres 150. 2 Water Blaster HY-5000. 2 Razor 320W. Apex Gold. MR2 GFO. 2 800W Heaters. Tunze Osmolater. 2 20g-long QT tanks. Geo 624 CA. 80W UV

11/29/2016, 11:26 AM	#6
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	The supplement might be precipitating if you are adding a very large dose in one shot into a small body of water. The baking soda version of the 2-parts is better about precipitation. If you dose into the main tank, that might help, too, assuming the supplement is going into a sump currently. __________________ Jonathan Bertoni

11/28/2016, 10:57 PM	#4
thegrun Registered Member Join Date: Dec 2008 Location: Garden Grove, Ca Posts: 17,023	It certainly sounds like calcium precipitation, caused either from overdosing the two part or low magnesium.

12/04/2016, 12:24 PM	#7
Reeferz412 Coral Hoarder Join Date: Mar 2011 Location: Miami, FL Posts: 2,247	I dose into the overflow but large amounts. I could dose mag and stop dosing cal and alk until things level out? Sent from my iPhone using Tapatalk __________________ Alex FMAS Member Current Tank Info: 400 Gallons of frags... 30 gallon Deep Blue mixed reef ... 70 other tanks throughout south FL