Foam on surface

[chopper320]

Hey, I need to know if this is normal....I know you need all of my info to help, so here it is:
3 days ago I got a used 44 gallon pentagon tank. I first put in 60 lbs of sugarsized aragomite sand. I then filled it with regular tap water and added a dechlorinator(I have tested the water b4 and it's ok to start my tank with--after initial setup I always use RO/DI water). I then added salt and stirred it very briskly(again I don't mix the salt in the water except on initial setup). I immediately started a small HOB filter with no media and a powerhead to mix the water. After 2 days I turned the powerhead and filter off to help the sand settle faster. I have not started a heater or my lights yet so the water is somewhat cold.
I said all of this now to ask one question. I don't know how long it's been there b/c I didn't pay attention until today, but on the surface and the sides of the tank where the water has evaporated, there is a very thick foam. I am worried that something might have gotten in the water somehow(although I'm not sure how b/c I was very careful). My salinity is at 1.022 and the foam doesn't have any smell to it. Should I be worried or is this foam normal?
Sorry for the long post and thanks for your help!

 

[mr . salty]

It could be as simple as residue from whatever you cleaned the tank with.I would try to skim it out with a coffee cup,and continue with the setup...

 

[nosmada]

i would guess its from mixing the salt in the tank and mixing up your sand with it. i have cleaned sand before and when you stir it and mix it you get that foam on the top.
chris

 

[guppie]

Salty makes a good point did you clean the tank with anything befor setting it up. The foam might be form that, or it could be from mixing the salt in the tank. I just set up a tank with only l/r in it and when I put the l/r in after the tank had been running for a couple days there was some foam in the back of the tank. I would try to get as much out as you can and let the tank settle for a couple days before putting any fish in it. Good Luck

 

[chopper320]

Hey, I didn't clean the tank w/ anything but water. I think it may just be from stirring the salt b/c I skimmed it off the top and it's not reforming. It wasn't like soap suds though...It was a lot thicker than soap foam.
Thanks for your help...I will be very paranoid until I have some livestock in the tank for awhile so thanks for your reassurances

 

[fender]

This foam is no big deal and most likely came from the sand. I have been slowly adding sand to my tank over the last few months and when I don't rinse the sand I get the foam. The last two batches I added were OOlitic which is about the same thing as sugar sized. The foam ring went away in about a week. No harm done. All levels normal.