I'm so tired of seeing people building areo cloners the wrong way! Leaking all over the place! Get a second lid for your homemade cloner and be done with the drips! I'm going to skip the steps on how to build an Aero Cloner ( There are enough DIY aero cloners on here to show you how) and show you how to modifiy your aero cloner to make it leak proof! 1# You are going to need two lids for your tub. 2# Use GE Silicon 1 CLEAR ONLY! If you don't you WILL kill your clones! It's the same as Aquarium silicon but much cheaper. 3# Trace around and cut the inner rectangle out of your first lid. 4# Cut out your 2 inch net pot holes on the first lid. 5# Put your second lid on the tub. Now place the first lid on and trace where the net pot holes are covered up with a marker. Take the first lid off and grind away the material covering your holes, the marker should have shown you how much to take off. It should look like this! 6# Now take the second lid and silicon all the edges on the under side real thick. Then lock it down on the tub. Flip the tub over and silicon any gaps on the under side of the lid. 7# Let the silicon dry for 24 hours. After 24 hours, fill the tub up with water till it's to the top. If it doesnt leak a drop, your done! If it leaks, fill any gaps with more silicon till it doesnt leak. Now let it dry for 4-5 days till the vinegar smell is gone. After that you can finish your aero cloner and use it. 8# Now that it's dry you can put your lid on and it will look like this! 9# Finished pics!