You need to be ceative
I use the hook that comes with Maxijets. I have a canopy so I can't hook it on the lip though. If you have installed blinds in a house, most come with a plastic piece that holds a trim piece on - I never use them for the blind. They fit pretty good on the tank lip and it has a little hook on it that I use zip tie on to hold it to the maxijet hook.
You could easily use a small piece of acrylic and bend it to make an L, then use the weight of the canopy to hold it in place. A drilled hole and a zip tie will do the rest.
, when I use the Maxijet hook, I also use the 3 suction cup with it. You can slip the hook in the PH
and then zip tie the suction cup to the base of the hook. The top of the hook sits right underneath tank lip.
I can take a pic if needed tonight. This is not perfect because the PH
will tilt down a bit and if the suction breaks, they will move a bit but it does keep the PH
from hitting the sand bed. We all know that sucks!