FlytrapCare Carnivorous Plant Forums

Sponsored by

Discuss water requirements, "soil" (growing media) and suitable planting containers

Moderator: Matt

By rxm161
Posts:  8
Joined:  Sun Oct 03, 2021 1:49 am
Being new to the forum if I have this in the wrong place please advise.

But, I had two small cracks (holes) in the container I use to hold water and my pots in. I used black silicone sealant to close these two small holes. While it keeps the water in very nicely it got me thinking: Is this sealant bad for my VFTs?


Sent from my SM-G965U using Tapatalk

User avatar
By Panman
Posts:  2911
Joined:  Wed Mar 04, 2020 8:41 pm
I know that the clear silicone that you use on aquariums would be okay but I am not sure about black silicone. I think it should be okay because silicone general doesn't react with anything.
User avatar
By Kapahulu
Posts:  65
Joined:  Mon Oct 04, 2021 9:13 pm
It must say "aquarium safe" somewhere on the tube. Or check the specs of the brand online...
User avatar
By ChefDean
Posts:  4752
Joined:  Tue Sep 18, 2018 12:44 am
If it's 100% silicone it will be fine for your plants as long as it is allowed to cure properly before exposing it to water, usually 24 hours. Silicone cures by exposure to oxygen, obviously can't do that underwater, and some form of solvent evaporation. Exposure to water before a full cure can result in failure of the seal and the leaching of chemicals into the water.
All that being said, if you wait at least 12 hours after applying it to a clean and dry surface, you'll be fine with it sealing the crack, and the amount of chemicals leached will be negligible and easily flushed away.
I wouldn't use siliconized caulk, even stuff designed for bathroom use as it's not designed for constant exposure to water. It'll probably fail before too long, and you're right back at square one.
Panman, MaxVft liked this
By rxm161
Posts:  8
Joined:  Sun Oct 03, 2021 1:49 am
Thanks all! Much appreciated

Sent from my SM-G965U using Tapatalk

Warm Temperate Sundew Guide Input

for filiformis floridana all red, brevifolia, trac[…]

I know their roots are very sensitive, and if I b[…]

Butterwort dying

Without pictures, it is hard to say. What conditio[…]

saving 2 venus flytraps

Yea, VFT roots are naturally black. Sometimes VFT […]

FYI, the Emeralds Envy mother plant grows all year[…]

Dingley Giant

20th January, starting to grow a bit more again.

Council for humidity nepenthes

If you have temperature, lights, and air movement […]


You don't normally feed Utrics prey, their traps a[…]

Support the community - Shop at!