ᐅ Cleaning the Pool Area and Dehumidifier

Hello,

My house came with a pool that still contains water, but the system is currently not in operation. As a result, the water looks quite unpleasant.

Before I drain the water, I would like to test the entire system and then clean the pool and related equipment.

Question 1: When I drain the water later, is there a risk that wall tiles might fall off because the water is no longer providing counterpressure?

Question 2: How can I clean the pool cover that appears to have algae and what seems to be lime scale? Please see the photo.

Question 3: There is also a dehumidifier in the pool room, which still runs but no longer reduces humidity. Since it consumes 2,000 watts and is 15 years old, it probably isn’t worth repairing. Does anyone have a recommendation for a good device suitable for a pool room?

Thanks very much for your help!

Best regards,
Stephan

Could you also please share some pictures of the equipment?
What does the water look like? The cover already doesn’t look very good.
There are cleaning agents, pressure washers, and brushes available for this.
I suspect the water hasn’t been disinfected or circulated for a long time.
Do you have any leaks in the pipes?
The proper procedure would be to drain the water, clean everything, backwash the filter or even replace the sand. Then fill it with water again, adjust the settings, and filter adequately.
It might also be worth considering replacing the pump with a modern, controllable unit. But this can only be assessed once the equipment is seen.
Please don’t just switch it on. The dirty water will quickly clog the filter.

Debris would also settle in the water.

Dehumidifiers always consume a lot of electricity. To give a recommendation, the room volume must be known.
There are also several different systems for dehumidification.

Hello,

here are some pictures of the technical equipment and the water.

A pH and chlorine test was also done a few weeks ago, and all values were within the normal range (assuming I performed and read the tests correctly).

Currently, I am using a Comfee dehumidifier (20 liters/24 hours) in the pool room.
It is set on a timer to run 4-5 times a day for a few minutes each time.
The energy consumption is just under 1 kWh over 24 hours.
The humidity level is between 60-65% at 19-20 degrees Celsius (66-68°F).
The device uses 360 watts and cost 130 euros.

Thanks first of all for the pictures.
At least the water is clear.
Your pH level is too high. It should be between 7 and 7.2. If it’s higher, the disinfection won’t work properly and can harm the equipment and skin.
Your redox potential (ORP) is way too low! It should be around 720mV. This means the water currently has too little chlorine.
The usual problem is the waterline, where you have the most dirt buildup.
Your control system for pH and chlorine is a very good (and expensive) branded unit.
Unfortunately, the pump and filter are not shown in the pictures. I suspect the pump is housed in the orange container.

If your current dehumidifier is sufficient, I would not change anything for now. Once the pool is in use and heated, and you notice it’s not enough, you can still replace it. Large and high-quality dehumidifiers can easily cost four figures. So it’s better to stick with your current one for now.

I would start by cleaning the cover. There are good branded cleaners from Bayrol or even generic ones. Let the cleaner soak well, then scrub and use a pressure washer. Multiple cycles might be necessary. Only then drain the water and clean the entire pool.
It won’t look like new, but as long as it works and looks better after cleaning, that’s fine. It’s better than spending a lot of money on a new cover right away.
After that, refill, shock chlorinate (possibly the filter as well unless the sand has been replaced), heat, adjust the values through the dosing system, and off you go...

If the water remains for a longer time (before you have time to clean), make sure to circulate and filter it.
A pool should be filtered about three times a day.
The filter must be backwashed regularly (if not done automatically).

If you have any questions, just ask.

Thank you very much for the detailed explanation. This is completely new territory for me.
I probably won’t use the pool right away, but I want to test the equipment and get familiar with it. The whole system might not even work anymore. There was also a pool cleaner included.
The water certainly hasn’t been circulated for 1-2 years.

I will clean up the equipment room, take more pictures, see if I can find a manual for the system, and then try to get the water moving.
How often should the filter be backwashed?

Where did you find all the useful information about pools?

We also have a pool (20 meters outdoor). However, we already had experience with other pools before that.
There are also pool forums available. Links are not allowed here, but they are easy to find.
How often the filter needs backwashing depends on usage and the filtration system.
On average, about every 1-2 weeks. You can see clearly on the filter’s pressure gauge if it is necessary (pressure increases).
You can find the instructions for your dosing system online. The probes need to be recalibrated.
The timer shown in the picture is probably for the pump.
If the system has been idle for this long, it will be interesting to see what happens. A modern pump can quickly pay off. I see the greatest risk of defects here.
The pipes do not get damaged. The sand in the filter will definitely need to be replaced. Check the seals.
Based on the dosing system, I believe quality components were installed.
I recommend moving this discussion to the Pool (powershop) forum with additional pictures.
I have already explained the cleaning process to you. If you don’t want to use the pool for now, I would advise not filling it after cleaning. Even if not in use, it still needs to be filtered and disinfected. I would also replace the chemicals, especially the chlorine.
You have a good starting point here to have an indoor pool with relatively little effort.
Circulation and chemicals are not expensive. You know about dehumidification yourself. Heating is the biggest issue.
For very low usage, it is too expensive/unsuitable. Recently, there was a thread here about someone converting a pool into a home theater.
Looking forward to more pictures and updates.