Best black reef safe caulk?

[1mp3r1al]

I am looking to bond an ABS baffle to glass, anyone know of the best reef safe black caulk to use to do this?

 

Thanks!

[AlanM]

The classic one is Dow (Momentive/GE) RTV103.  Most people say you don't want one with any of the anti-microbial additives, and this one has been used by many people for many years.  

 

You can get it from McMaster (with a certificate and test report giving the contents of that lot) easier than from the wall of caulk at the big box stores, I assume.  

 

https://www.mcmaster.com/7545A562/

 

Aquarium supply retailers also probably sell caulk that has been found to be reef safe.

 

[1mp3r1al]

Thanks AlanM!

 

I was looking at this caulk, 

 

https://www.amazon.com/gp/product/B001R0GUZG/ref=ox_sc_saved_title_1?smid=ATVPDKIKX0DER&psc=1

 

Says it's waterproof, but I cannot find any information about it having any anti-microbial additives.

 

Also this one...

 

https://www.amazon.com/gp/product/B000N1AMY0/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

 

 

Edited November 9, 2020 by 1mp3r1al

[jason the filter freak]

https://www.amazon.com/Black-Aquarium-Silicone-Sealant-Cartridge/dp/B00EZB2MDI/ref=mp_s_a_1_3?dchild=1&keywords=black+aquarium+silicone&qid=1605239028&sprefix=black+aq&sr=8-3

[jason the filter freak]

The second one you listed would always also be a great option