Is this stand pipe for a spa blower and would it be good to install one?

No, just turn on the hose and stick it in the pipe and then look at the jets with the pump off to see if water comes flowing out.

The water should flow easily.

No need to seal the pipe to try to generate pressure.
Ok now I've done it. I put the hose in and after a bit it did start moving water into the spa. But that is some nasty green water that's now in my spa and pool. I immediately dumped some bleach in the spa and stirred it around and now I am initiating a SLAM (which I've never done). But this has me a bit concerned if I've introduced anything else potentially harmful into the water that won't be killed by a SLAM. Should I have any concern there or if I go through the SLAM process should I be ok?

Also, I put about a half-gallon of bleach into the pipe I was flushing out and let that run a bit. But how do I keep that pipe sanitized, etc.? It seems like water is just going to keep sitting in there. I guess if I start using it with a blower it will keep it dry?

Any help here is appreciated as I feel like I've now entered a new world by introducing this gunk into the pool. But, on a positive note, I have confirmed that pipe was connected to the venturi and I guess I needed to get that junk out of there at some point.
 
The water has probably been sitting in the pipe stagnant for the entire time.

You can flush it with water and bleach or maybe Ahhsome to try to clear out any biofilms.
So if I get this air pipe flushed out. Will it then stay dry? Or will it fill back up with water regularly? Will I need to flush it out regularly to make sure it doesn't stagnate? I suppose if I put a blower on it that will flush it out whenever it runs. Just trying to figure out how to keep from having stagnate water introduced back in.
 

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You can put a check valve to keep water from filling the pipe somewhat, but water will get in the pipe.

If you use a blower regularly, then that should help keep the pipe clean.

If you are not going to use a blower, you should probably disconnect the pipe and cap it off.
 
You can put a check valve to keep water from filling the pipe somewhat, but water will get in the pipe.

If you use a blower regularly, then that should help keep the pipe clean.

If you are not going to use a blower, you should probably disconnect the pipe and cap it off.
I will probably be installing a blower and can run that regularly to keep it clear. But just curious -- how would I install a check valve or cap off the pipe as it is all inside the gunite or under our pool deck. I guess I could cap off the exposed end at the equipment pad and maybe the pressure lock would keep it from filling up?
 
Have you tried to remove the return fittings to check for clogs? Not sure exactly what type you have.
Not yet, but I just ordered six spa jet nozzles. I know one of them is damaged and I figured i would check all of them and replace if needed. So I'll pull them all out when I get those and check them.
 
So, with regards to the SLAM (let me know if I should start a separate thread on this):
  • I've had my FC at SLAM level (20PPM) for about 24 hours now. I had to top off with LC a couple of times during the day yesterday.
  • My CC has never been over 0.5, mostly it's been zero.
  • I did my first OFCLT and barely failed. Lost 1.5 PPM overnight (from 22 to 20.5PPM) -- that was over a span of 9 hours .
  • I brushed and vacuumed everything yesterday (it was time for me to do so anyway).
  • My water is crystal clear (looks pretty much like it always does)
Overall, this seems encouraging to me, but would appreciate any insights on this as I've never done a SLAM before (never had to). Should I keep going until I get that overnight loss test to <1PPM? Per your point above @JamesW I plan to keep FC levels elevated for a week or two after anyway.
 
Yes - continue to keep your FC at SLAM level. Great work.
So am I understanding correctly that once I get an overnight loss test of <1 PPM (assuming CC and water clarity is still good) I can stop the SLAM and let the FC levels return to normal (or elevated a bit for a while)?
 
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Other thing I wanted to ask -- I see in the documentation that it is safe to swim up to SLAM levels as long as you can see the bottom of the pool. We won't be swimming a lot these days but we would typically use our spa. Is it really safe to heat up the spa and use it at 20 PPM FC? Has anyone ever done that could share real world experience?
 
Other thing I wanted to ask -- I see in the documentation that it is safe to swim up to SLAM levels as long as you can see the bottom of the pool. We won't be swimming a lot these days but we would typically use our spa. Is it really safe to heat up the spa and use it at 20 PPM FC? Has anyone ever done that could share real world experience?
Yes = so long as you follow the SLAM level for your CYA.
FC/CYA Levels
 
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