Film On Silicone

[texyank]

I resealed my tank about two months ago and just recently got time to set it up. After putting in my live plants and filling up the tank with water I noted a slightly yellow film on the silicone. It scrapes off very easily with an algae scraper. It tends to stay in a string rather than break up into pieces. Any ideas about what this might be? I've never experienced this before, although it is my first attempt at a planted tank. I have no live stock yet, but will need to soon as the algae invasion has begun.

 

[XeroTolerance]

It may be your silicone product that you used. Did you check if it was aquarium safe? If it is its probably normal. I have rubber for my heater and a white fuzz grows on all the rubber parts. When the cycle is done it usually goes away.