View Full Version : Silicone to reseal tank

07/28/2015, 06:21 PM
I am a diyer and love to work on aquariums I just love it.

Anyhow I recently purchased a 27 gallon cube and it needs to be resealed.

I have gone over the silicone threads and searched google.

I think that rtv103 momentive and ge 1 black silicone are good options.

I have read some threads about ge 2 silicone being ok and others that it is toxic so im going to stay away from all not aquarium specific silicone.

so whats a good deal ?

I am not buying from my lfs as they charge twice as much as online vendors.
this is a budget build tank

07/28/2015, 09:41 PM
GE I is okay for baffles and such but I think the general consensus is for building/re-sealing where the pressures are greater use the rtv silicone as tank manufacturers use it too.
Don't use GE II for anything aquarium.

07/29/2015, 01:42 AM
This wasn't your original question, but why are you resealing? If te tank is leaking you need to do a complete tear down and rebuild. If the inner seals were just worn/disrupted then resealing is an option.

As far as silicone goes, I'd second the RTV recommendation. I've used both, and the RTV is better.

07/29/2015, 11:07 PM

08/03/2015, 11:40 PM
The tank was bought used and it had been reseal ed before and didn't look good.

And who knows what they used.

I bought aqeoun aquarium silicone just finiahed it looks sick by the way.