Baffle Silicone turning yellow in sump

[fltekdiver]

Not sure why, I did a ton of research before building my sump, but all the silicone is turning yellow?

I used GE Silicone 1 from Home Depot, and let it cure a few days to a week , before filling the sump?

http://i296.photobucket.com/albums/mm200/fltekdiver/2013-08-10140311.jpg (http://s296.photobucket.com/user/fltekdiver/media/2013-08-10140311.jpg.html)

[DrAsTiC]

Have you recently built this? Check to see if they added mildew inhibitors into it.

[fltekdiver]

Yes, About 2 months ago

I did not see they did, the GE 2 was labeled with the mildew inhibitors, but not the GE1

What should I do if they did, remove the sump, clean it all off, and start over?

I was thinking of re-designing my sump anyway

I wanted to move the return over and put the refugium in the middle

[DrAsTiC]

You are correct about the GE 2 they have added inhibitors to that model. I have never used the Ge brand but I know that is the main reason why you do not use just any silicone on aquariums because of the inhibitors. In this hobby I have found you are better of safe then sorry. Sorry usually means a lot of money lol. I would clean it off since you are planning on redesigning your sump anyway. I would put the return pump in the middle the skimmer on the left and the refugium on the right since the refugium does not need a lot of flow.

[fltekdiver]

That's how I have it, I'll slow the flow down to the return area

Everything I read, GE 1 was safe

http://i296.photobucket.com/albums/mm200/fltekdiver/2013-08-03102017.jpg (http://s296.photobucket.com/user/fltekdiver/media/2013-08-03102017.jpg.html)

[ca1ore]

FWIW, I used Aqueon silicone for the baffles in my sump and have had the silicone turn yellow. Whatever the cause, it has nothing to do with mold inhibitors.

[fltekdiver]

Ohh, good to know !!! Perfect, Then I'll assume it's harmless other then ugly :)

[StephNewman]

Mine did same thing. I don' think it is a problem

[Cstaricansrfer1]

My sump baffles are doing the same, but also turning yellow and black at the same time. I used GE I without the mold inhibitor. Doesn't seem to have any ill effects on livestock, but I think I will change to RTV next time.

[billdogg]

give it time - it will eventually go back to white(ish) what you are seeing on there is probably algae. Mine did that when I first set it up - has since gone away.

[fltekdiver]

Thank you, I'm about to pull it out, and go with RTV silicone and glass baffles. Not sure yet

[kungfukid]

you can use an old toothbrush to clean it off.

[chiblackhawks4]

Mine did the same thing and is yellow to this day (about 9 months). Doesnt seem to have an effect on anything. Made me nervous at the time as well!