Newbie with MAJOR problem...

[duraleigh]

Dog,

Listen to "Waste"!

Bangin' on that PVC with power equipment or a sledge is an invitation to a much larger problem.

As an aside, it doesn't seem to me this is the source of a suction side air leak. It's not clear to me how air could be entering the system that far underground

[CarlD]

Dog,

Listen to "Waste"!

Bangin' on that PVC with power equipment or a sledge is an invitation to a much larger problem.

Hey! I was gonna suggest dynamite next! Are you saying that might not be a good idea?

[MyBlueDog]

Thanks.

Question for the engineers/scientists: Wouldn't a main drain suction blockage at 6' underwater, and a pump surface side 2' above cause the pump to pull oxygen from the water.

My thinking is since water contains O2, that any blockage in the main drain would restrict flow, causing the pump to work at the same rate, yet pull O2 from the water at a faster rate than it actually sucks the water.

Make sense?

[JJ in Tx]

How about a air chisel like on this page,used very carefully of course.

[MyBlueDog]

How about a air chisel like on this page,used very carefully of course.

Can you run an air chisel underwater?

[JJ in Tx]

Never tried but was figuring that the "power" was all coming in thru the air hose and everything happening on/at chisel was exhaust from the operation. would make sure i oiled tool prior to and after use as well as run it a bit once it was out of the water to make sure it was "dry" before storing it.
JJ

[KurtV]

Thanks.

Question for the engineers/scientists: Wouldn't a main drain suction blockage at 6' underwater, and a pump surface side 2' above cause the pump to pull oxygen from the water.

My thinking is since water contains O2, that any blockage in the main drain would restrict flow, causing the pump to work at the same rate, yet pull O2 from the water at a faster rate than it actually sucks the water.

Make sense?

I don't think you can "pull" dissolved oxygen from water with suction. If you could oxygen from water that easily, you probably would have been using a device that does that instead of a tank for your dives. (There are some devices for diving that allow you to extract breathable oxygen from water but I don't think the methodology is simple suction.)

Trying to think a little out of the box, is there any way you could drill a hole in the concrete chunk, insert a lead anchor, thread a lag bolt into the anchor, and pull the chunk out with a big pair of pliers?

[MyBlueDog]

Trying to think a little out of the box, is there any way you could drill a hole in the concrete chunk, insert a lead anchor, thread a lag bolt into the anchor, and pull the chunk out with a big pair of pliers?

I don't know. I think I'm going to try to keep chiseling on it with a long screw driver and take my chances with air refills at the dive shop. What a nightmare. I really don't want to have to drain the pool, but that's what it's sound like the only solution may be.

**One note: When my skimmer level is nornal l(half way up with water), and the pump is set on main drain, the air coming into the pump seems to disappear.

I have a simple 2-way Jandy, turn on way for the skim, one for the main drain. It is a brand new valve. 1 week old.

This makes no sense to me.

Why would a correct water level in the skimmer (or lack thereof) dictate me getting air in the pump when the valve is set on main drain???

[HAYMAN]

I don't think you can "pull" dissolved oxygen from water with suction. If you could oxygen from water that easily, you probably would have been using a device that does that instead of a tank for your dives. (There are some devices for diving that allow you to extract breathable oxygen from water but I don't think the methodology is simple suction.)

Trying to think a little out of the box, is there any way you could drill a hole in the concrete chunk, insert a lead anchor, thread a lag bolt into the anchor, and pull the chunk out with a big pair of pliers?

You guys are good........................lots of good stuff here. As I sit up here on the fence though, I would have to say I like the drill and pull method the best..........I would try that.

[mshumack]

Can you run an air chisel underwater?

yes, an air chisel will work underwater but you won't be able to see what your doing with all the bubbles from the exhaust (the ones I've seen all exhaust through the handle or body). If there was a way to vent the exhaust through a hose to some distant location ...