Spa and algae

[NotThePoolGuy]

Approx 600 gal fiberglass spa is completely green with algae. I've been reading about how to drain, clean and refill, but I'm so confused now that I don't even want to attempt it.

But I must. So what do I need to have on hand once I've cleaned it? I have chlorine tablets, stabilizer, and 31.45% muriatic acid on hand already for the pool. I've been reading about Dichlor which I'd have to order.

Also what do I need to do to the sand filter to ensure its cleaned during this process?

I'm going to have to order spa cleaner and plumbing cleaner before I can start since I can't find it locally, unless you have suggestions.

When draining it, can I drain it through the existing system, or should I get an external pump?

 

[setsailsoon]

Let me bump this up and see if people that know about fiberglass spas can respond. @Jimrahbe @mknauss @Texas Splash

 

[mknauss]

I do not have a standalone spa -- but I would suggest you get Ahhsome cleaner to use when you drain it. TFTestkits.net carries it.

 

[Texas Splash]

I suspect an Ahh-Some treatment is on the to-do list. Since you have algae, it's probably best to just drain and change the water first. You may need to run the spa's FC at a SLAM level for a short time after the Ahh-Some treatment just to purge the filter from any residual stuff still in there unless you open i t up and clean it as well. Below is a good page on spa chlorination.

How do I use Chlorine in my Spa (or pool)?

If you have a question about any information within this Sticky, please start a new thread for yourself where you will receive very quick responses to your specific questions. Thank you! Introduction There are two main things to consider when maintaining your hot tub water, Water Balance and...

www.troublefreepool.com