heres how i'm doing my lids from now on and thought i would share. :)
all you need is tyvek (postal and kite makers), tape, silicone, and a jar band.
first we start with two layers of postal tyvek (ink side up), one on top and one on the bottom with a
layer of kite makers in between the two postal. Now screwed down
tight with a band... *if you take a pliers and squeeze that lip (under the inner edge of the band that cuts into
peoples tyvek when they screw it on too tight) flush, you will stop that problem of cutting your tyvek..
or at least reduce the risk.
Next, apply duct tape like this...
The larger triangle is for silicone and the smaller is left as is for the gas
I use just aquarium silicone... it's 100% silicone, so i don't know why
they call it 'aquarium'... anyways, it looks like this...
now dab a little bit on your finger and rub it into the tyvek where you plan on putting the
injection port... this will make sure that all the tyvek gets adhered to the silicon that you are about
to apply. Now apply a bunch (at least 1/8 an inches worth) onto the larger uncovered
now this is the important part... silicone works great for self healing innoc
ports as long as it sticks. Jar lids are not good for this BUT tyvek is
excellent, as long as you push it into the tyvek.. you do this by getting
your finger really wet so that it won't stick to it and press down firmly on the
glob of silicone. try to spread the silicone out a bit to cover all the tyvek...
I disected a dry silicone glob to show how well it stuck to the tyvek....
This is what it should look like after it's dry and ready for use...
you can use these again by just replacing the bottom two pieces of tyvek OR...
*if you want a really safe lid (I would recommend it, the lid is one of the most important parts to a
successful grow) you can turn the lid over and put a second silicon patch in the same spot the top one
is... just on the bottom layer of postal tyvek. So now if something wants into your jar, it needs to go thru
two injection ports and three layers of two different kinds of tyvek.
these lids can be used over and over again... with no replacing tyvek.
Edited by Sidestreet, 04 April 2021 - 08:21 AM.