I would think so. If one of the drains is leaking, and you could get the dye to suck into one of them, with the covers in place you wouldn't be able to determine exactly what is leaking. And if you couldn't see the dye get sucked in with the covers on, you wouldn't really know if one of the...
As I've been talking through this troubleshooting with @mcleod, the factor that is well outside of my wheelhouse is the stress to the pool structure. I wouldn't even want to drain my concrete pool like this. How much draining can a vinyl pool withstand? We're already seeing sags and wrinkles...
(OK, you all saw it. He asked first, I didn't shove it down his throat!!!)
Why, yes, as a matter of fact!! One of my favorite threads! (Note, I have an EasyTouch, but all the principles would apply to IntelliCenter.)...
Which port is this? Has the water level ever drained down below it? Or has it stopped here? It looks to be under a lot of stress. It's poking out, and there's a big wrinkle just below it. It's definitely been tweaked out of its original position.
Sidebar: you don't need to keep addressing any...
You mean from his filter? Dern it, I didn't think of that! We've been analyzing how the water drops and what's been going on in his yard (some recent work was a suspect). He's been monitoring the bucket test the whole time, so he ruled out evaporation. He just replumbed his pad, and had his...
Did you examine the two sealing surfaces with a magnifying glass? You'd be looking for a lump of something that wouldn't come loose by just rubbing it with a cloth (or the Q-tip you're not supposed to use). Or a crack.
If you use a moderate amount of lube, and hand tighten, then torque another 1/8 turn (with towel or tool), and you get a leak, then you're not doing it wrong. Especially if you've tried multiple o-rings.
The reason I suggested the o-ring swop is just a matter of thorough trouble-shooting. If...