Clean the pool area and dehumidifier

Hello,

at my house there was a pool included, which still has water, but the system is not in operation. Accordingly, the water looks like this.

Before I pump out the water, I would like to test the entire system and then clean the pool etc.

Question 1: If I pump out the water later, can it happen that wall tiles come off because the water as counterpressure is no longer there?

Question 2: How do I clean the pool cover, which apparently has algae and lime on it, see photo.

Question 3: In the pool room there is also a dehumidifier, which runs but no longer reduces the humidity. Since it consumes 2,000 watts and is 15 years old, a repair probably no longer makes sense. Does anyone have a recommendation for a good device for the pool room?

Many thanks for your help!

Best regards
Stephan

Can you also post pictures of the equipment sometimes. What does the water look like? The cover already doesn’t look good. There are cleaning agents, high-pressure cleaners, and scrubbers 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, rinse the filter or even replace the sand immediately. Add water, set the values, and filter sufficiently. Maybe it’s also worth replacing the pump with a modern and adjustable device. But you can only assess that when you see the equipment. Please do not just switch it on. The gunk will quickly clog the filter. Flow would also settle in the water. Dehumidifiers always consume a lot of power. To give a recommendation, you need to know the room volume. There are also several different systems for dehumidifying.

Hi,

here are pictures of the technology and the water.

I also did a PH and chlorine test a few weeks ago and all values were (if I conducted and read it correctly) fine.

Currently, I am using a Comfee dehumidifier (20 L/24 h) in the pool room.
It switches on 4-5 times a day for a few minutes each time via a timer.
The consumption is just under 1 kW/h in 24 hours.
Humidity is between 60-65% at 19-20 degrees.
The device has 360 watts and cost 130€.

Thanks first of all for the pictures. The water is at least clear. Your pH value is too high. It should be between 7 and 7.2. If it is higher, disinfection does not work properly and damages the equipment, skin... Your redox value is far too low! You should be at about 720mV here. In other words, the water currently has too little chlorine. The problem is, as always, the waterline. Here you have the heaviest dirt. Your control system for pH and chlorine is a very good (and expensive) brand device. Unfortunately, the pump and the filter are not in the pictures. I assume the pump is housed in the orange barrel. If your current dehumidifier is sufficient, I would not change anything at first. Once the pool is in use and heated and you notice it is not enough, you can still replace it. Large and high-quality dehumidifiers quickly cost four figures. Therefore, it is better to stick with your current one for now. I would start by cleaning the cover. There are good brand cleaners from Bayrol or also no-names. Let it soak well, scrubber and then high-pressure cleaner. Probably several passes are necessary. Only after that drain the water and clean the entire pool. It will not become like new, but as long as it works and looks better after cleaning, it’s fine. Better than spending a lot of money for a new one right away. Then fill again, shock chlorinate (possibly also the filter if no sand has been replaced), heat, adjust values through the dosing system and off you go... If the water remains in longer (before you have time to clean), definitely circulate and filter. A pool should be filtered about 3 times a day. The filter must be backwashed regularly (if not solved automatically). If you have any questions, just get in touch.

Thank you very much in advance for the detailed explanation. This is completely new territory for me. I probably won't use the pool for now, but I will test the equipment and get familiar with it. Maybe the entire system no longer works. There was also a pool cleaner included. The water certainly hasn't been moved in 1-2 years. I will tidy up the technical room, take more pictures, and 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 get all your information about pools?

We also have a pool (20 meters outdoor). However, we had already gained experience with other pools before that.
There are also pool forums. Links are not allowed here but can be easily found.
How often the filter needs to be backwashed depends on usage and the filtration system.
On average, about every 1-2 weeks. You can easily see if it is necessary on the filter’s manometer (filter pressure increases).
You can get the manual for your dosing system online. The probes need to be recalibrated.
The timer shown in the picture is probably for the pump.
If it has been idle for so long, it gets interesting. A modern pump can pay off quickly. I see the greatest potential for defects here.
The pipes don’t break. The sand in the filter certainly needs to be replaced. Check the seals.
Based on the dosing system, I believe that high-quality components were installed.
I recommend moving the whole thing to the Pool (powershop) forum with more pictures.
I have already explained the cleaning procedure to you. If you do not want to use it for the time being, I would advise against filling it after cleaning. Even if it is not used, it must 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 "small" effort.
Circulation and chemicals are not expensive. You know about dehumidification yourself. Heating is the biggest factor.
For very low usage, therefore, it is too expensive/pity. Recently there was a thread here in the forum where someone converted a pool into a home theater.
I am looking forward to more pictures and updates.