Deep cleaning of thermal pool

[Sun&Sand52]

Does anyone know if it is unusual to do a “Deep Cleaning” of the thermal / thalossotherapy pool in the spa during a cruise?  On the NIeuw Statendam last week and there was a sign posted that said they were closing the thermal pool for a deep cleaning and that it would occur on the last night of the cruise.  Sign stated thermal pool would be closed at 6:00 PM on Saturday (2/8) but that the rest of spa would remain open for use.  
 

Just curious if this is normal and usual?  I have never seen a “deep cleaning” posted before on a cruise.

[chengkp75]

I believe the thermal pool falls under the USPH classification of "spa pool":

"Spa pool: A POTABLE WATER or saltwater-supplied pool with temperatures and turbulence comparable to a WHIRLPOOL SPA. • Depth of more than 1 meter (3 feet) and • Tub volume of more than 6 tons of water."

 

and as such it must be drained and cleaned at least every 30 days, so this must be falling on your last day at sea.

[tutumomickey]

We had this happen on the Nieuw Amsterdam, also on the last night. Seemed to be a fair choice to minimally impact usage.

[Sun&Sand52]

Good to know. Sounds like usual maintenance then.  Was just concerned as I thought there may have been an infection  or something going on within our cruise population. I became sick on day of disembarkation so must have unfortunately picked up something on the ship. 😞

[atexsix]

I think the Eurodam did it twice on our last sailing which was 18 days.  Once mid-cruise and again the last night.  I know this because we had the stateroom just below it and we heard everything.

[rkacruiser]

Normal procedure in my experience; nothing to be concerned about.  

[Taters]

On our cruises on Koningsdam, Westerdam and Zuiderdam they closed the hydro pool for cleaning once per week.

[FlaMariner]

On the Nieuw Statendam, the spa was closed one evening at 6pm for cleaning.  There was a sign posted a few days prior.  No bigger. Glad they clean it.....We love the hydro suite...that's our "drink package" splurge.