Fan controller dilemma

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Here I'm with another request for advice.
Recently went for a custom watercooling using the Phanteks Enthoo Primo.
As I'm using one radiator 280mm and one 420mm push/pull, obviously 10 Arctic P14SP PWM (4pin), plus 5 x 14cm Phanteks supplied with the case (3pin).
At the moment I'm using the ASUS B350-F, and the only 2 readers which support PWM are the ones designated for the CPU cooler.
Here start the problems, or better, my questions:
As I'm using a dual D5 EK PWM pump, I need to reserve both readers for the pumps, as I'm not keen on running them 100% 24/7. Using a "Y" cable would be fine for both pumps or it's better to connect each to one reader? I noticed that the secondary reader gives a "slower" speed, so my OCD kicks in.
I've used fan controllers in the past, and don't mind adjusting the speed when needed, but the Enthoo Primo with it's panel/door, limits pretty much everything reasonably priced size-wise.
I was silly enough to order a secondary Phanteks HUB, without noticing that they are intended for 3pin fans.
Here goes the hard questions: is there a fan controller slim enough that the knob doesn't interfere with the closing of the front door (being picky, but not keen on touch control)?
Considering that both readers that allow PWM are used for the pumps, I could connect all 3pin Phanteks fans to the HUB and limit the speed, not a problem.
Or could connect the pumps to the other readers and limit their speed, as flow won't affect my temps that much, as fan speed would?
The other reason to decide for a 5.25 fan controller is the tornado when turning the PC on. Last few seconds, but during the night would be a problem. I guess that the problem is because the Phanteks HUB is powered by a 12V SATA connector and takes few seconds for the fans to slow down. That doesn't happens when the SATA is disconnected, but I'm not willing to run 10 fans from one fan reader alone.
Any kind suggestions?
 
Those pumps apparently have separate connector for power directly from PSU's cables and that normal fan header cable is just for control signal.
So it would be perfectly safe to connect two such to one motherboard header.

As for non-touchscreen fan controller there certainly aren't many of them without protruding knobs.
There might have been one or two with knobs which depress, but don't remember name and availability is even more doubtfull.
There's only this one with lower profile knobs:
https://www.overclockers.co.uk/lamptorn-cl420-rgb-and-fan-controller-5.25-inch-black-fg-00b-lp.html

Of course there's Aquaero, which could be even programmed to start coffee maker before you wake up using relay output.

It comes in three version, LT/lite version without any control panel/display, "basic" 5.25" bay model and XT with also remote controller included.
https://www.overclockers.co.uk/search?sSearch=aquaero+6
But programming is best done using Aquasuite, where you can also control start boost.

but I'm not willing to run 10 fans from one fan reader alone.
Only 10?
 
Those pumps apparently have separate connector for power directly from PSU's cables and that normal fan header cable is just for control signal.
So it would be perfectly safe to connect two such to one motherboard header.

As for non-touchscreen fan controller there certainly aren't many of them without protruding knobs.
There might have been one or two with knobs which depress, but don't remember name and availability is even more doubtfull.
There's only this one with lower profile knobs:
https://www.overclockers.co.uk/lamptorn-cl420-rgb-and-fan-controller-5.25-inch-black-fg-00b-lp.html

Of course there's Aquaero, which could be even programmed to start coffee maker before you wake up using relay output.

It comes in three version, LT/lite version without any control panel/display, "basic" 5.25" bay model and XT with also remote controller included.
https://www.overclockers.co.uk/search?sSearch=aquaero+6
But programming is best done using Aquasuite, where you can also control start boost.

Only 10?
Thank you very much.
Somehow I've missed the Lamptron.
Used one of them in the past, pretty solid, and no unwanted noise when running the fans as slow as possible.
I may go with that them, thank you, really.
 
Pushing my luck a bit here, as the unit stated 30W per channel, the starting voltage for my fans is under 4W, so in the worst scenario, plugging 6 in one port, 4 in another port, 5 in another port and control the pumps in the 4th port would be fine?
May sound silly, but unsure if the voltage to be considered for my calculations must be the one (under 4W) from the fan manufacture's website...
 
Pushing my luck a bit here, as the unit stated 30W per channel, the starting voltage for my fans is under 4W, so in the worst scenario, plugging 6 in one port, 4 in another port, 5 in another port and control the pumps in the 4th port would be fine?
May sound silly, but unsure if the voltage to be considered for my calculations must be the one (under 4W) from the fan manufacture's website...
Watt is unit of (electric) power: Volts multiplied by Amperes
And fans are connected in parallel, not in series.

At 12 volts 30 watts is 2,5A current.
So with specified current of 0,12A for P14 you could put 15 of them into same channel with still safety margin.
Only question would be in can PWM signal source control 15 fans in one channel.
But switching to voltage control would likely solve that.
Aquaero 6 is very configurable.
Including max. speed or output voltage per channel, if wanting to always limit noise lower.
You can even control how much start up boost voltage, if any, it gives.
(some fans need higher voltage to start than they run on)

In case you have radiators in separate loops for CPU and GPU it would actually make sense to have fans in separate channels.
 
Thanks again.
My setup is pump, 420 rad, CPU, GPU, 280 rad, reservoir, pump.
CPU Ryzen 1600x, GPU RTX 2080.
Rads EK 45mm thick.
First wondered if a radiator between the CPU and GPU would be better, but so far, under stress, the CPU sits at low 40's and the GPU mid 50's. Synthetic tests. In games a little lower.
 
Get an Aquareo, couldn’t recommend mine enough and you don’t have to get an optical bay design they also do usb versions which you can easily fit in the rear of your case or bolt inside your case wherever you like.

I have the Aquaero 6LT USB and have ran 2 pumps and 12+ fans in the past without issue. I have had the 5LT with 12 pwm high speed fans on one channel, no issue.

I especially like it as it has masses of fan and pump control to configure exactly how you want. You can set to water temp or software sensor such as your gpu so the fans spin up to a desired curve when needed. It also has a fallback temp so they can remain silent the moment you press the power button unlike many controllers that default to full speed meaning a loud system until you get into the bios and or OS.
 
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