[4f1hmi]

I use GE silicone sealant II with no problems at all. I think the bond of 7 has stronger bonding capacity than the bond of 3. As long as you give the silicone sealant the proper time to set before you use it, you should be ok.The bioseal should be a new special formula meant for resistance the accumulation of molds and mildews that could penetrate the seal over a period of time. That should also be a plus factor for us that it should resist algae in our tanks too.