panworld pump :(

[newnano]

i have a panworld 100px-x on a CL and it is just too loud for my liking. pumps like crazy but too loud. what external pumps in the 1200-1500 gph range do you guys like?

[samsfishnchips]

for closed loop Sequence is hard to beat,

sam

[Ti]

Have you tried taking the fan off?

[newnano]

i ve only got two 1" outlets. i think all the sequence pumps would be too much

[newnano]

Ti---the fan noise doesnt bother me. its a cavitating like noise only the pump is not cavitating. it goes away with more head pressure. panworld acknowledged a problem with it and replaced it with a new one that does the same thing.

anyone use little giant pumps?

[Ti]

Try an Iwaki, I've had no complaints about Iwaki's

[compulou]

I'm using a Gen-X PCX-40 with an OM Squirt and I couldn't be happier. Not too much noise and works lovely!!!

[newnano]

does it give you enough flow? it seems very comparable to the panworld. i would like to avoid using any powerheads in the tank

[BreadmanMike]

I run the 100px-x on 3 different setups as return pumps, and they are virtually silent to me. Maybe the panworld pressure pumps are better suited for closed loops?

[samsfishnchips]

Aquaticman74,

there shouldn't be a difference,

the panworld worlds are not silent, they are low noise but not close to silent,

a bet the problem here is the tubing,

sam

[BreadmanMike]

Originally posted by nunez1980
Aquaticman74,

there shouldn't be a difference,

the panworld worlds are not silent, they are low noise but not close to silent,

a bet the problem here is the tubing,

sam

Let's put it this way Sam, I can't here them over the skimmers and other things running on my tanks. So, to me they are silent.

[lvreefer]

I have a couple of questions.

What type of plumbing are you using? PVC, ABS, FlexPVC, Vinyl
What size plumbing? 1", 3/4", 1 1/2 on intake / 1" out.

I would NOT recomend a quiet one pump. To many problems with the new design.

Let me know what you got. I have a couple of ideas depending on your setup.

[technomex]

Has anyone ever taken the fan off of a panworld?

[newnano]

i have plumbed this thing with every combination given my 1.5in bulkhead going into the pump and two 1 in going out.

i have 1.5in coming out of the tank (60gal cube) half way down. this 90's down toward the pump with spa flex to a what i call a disconnect but its a union. then its hard 1 in pvc to the intake of the pump. out of the pump it goes 1in up 2.4-3 feet and tees then goes to the two 1in bulkheads.

i have plumbed so many times with different distances between diameter changes that i doubt it is the plumbing. if i close one of the returns the noise stops. so i actually have to create pressure. panworld acknowledged that this is not right and gave me a new pump. which does the same thing just not as bad. they are now going to send me a 3rd pump because they will not refund anyone.


the only thing i havent tried is SW. i have been testing with freshwater. i doubt this will make much of a difference though

[printedpaper]

There is a thread in the DIY forum about removing the fan on a Pan World pump Mark

[newnano]

the fan is not the problem

[RichConley]

Originally posted by newnano
Ti---the fan noise doesnt bother me. its a cavitating like noise only the pump is not cavitating. it goes away with more head pressure. panworld acknowledged a problem with it and replaced it with a new one that does the same thing.

anyone use little giant pumps?

That REALLY REALLY REALLY sounds like theres too many restrictions on the intake of the pump.

Also, why are you using a big pressure rated pump on a closed loop?

[newnano]

actually, if i restrict the flow on the intake the noise will go away. the same goes for the ouput--if i restrict it the noise goes away. so the pump is getting all the water it needs

also the 100px-x is not a pressure rated pump. it is for circulation.

anyone who has this pump on a CL?

[mattboy]

I've used the iwaki equivilent on a closed loop; I think it's MD40rxt. I spent way more on the iwaki because on that particular pump model the japanese iwaki is supposedly quite a bit quieter, something to do with the hydraulics of that casing and impeller. BTW, when I was on the phone with iwaki, they guy told me that the circulation pumps (non pressure) really do run better with some head pressure, so you might try putting a gate valve on it and just putting enough pressure to quiet it down; hopefully not losing too much flow.

Saltwater might actually make a difference, at least my new pan world 50 pxx return pump (different system) is quieter with salt water; not much, but some.

The only pump sort of in that flow class that I know of that's much quieter is the CSL velocity T4, now owned by blueline (championlighting) I used a smaller one on my skimmer a while back, and it was amazingly close to silent. Man does it run hot, though, so if heat's an issue forget it.

[newnano]

thanks for the info. panworld is shipping me another so i will try that. if that doesnt work then i think i will buy the iwaki. i might just try the american version.

i also thought about the t4 but i dont like the fact that it has a hose barb instead of threads. otherwise i would have gotten it. barbs make me nervous.

i will give panworld and "A" for customer service. everyone i talked to was very nice.

[Kenfuzed]

I previously ran a Panworld on a CL and cured the noise with a combination of things. The first was to use a 12" piece of vinyl tubing just prior to the intake, and another piece between the output and the plumbing back to the tank. Second, I increased the size of the intake plumbing to 1-1/4 spa-flex. Third, I removed the fan and installed a heatsink and fan from a computer.

Now I know you say "it's not a noisy fan", but it's not necessarily the fan itself that makes the noise but rather a balance issue. The fan is said to actually cause the motor to vibrate. When removed the motor IME ran smoother and with the heatsink and PC fan ran cooler. There's a great thread on this in the DIY forum.

[newnano]

aquatic man---on these returns that you have, do you have the return split to more than just one outlet?

[newnano]

ken--the balance issue does make sense!!! that could explain why adding pressure to the intake or output gets rid of the vibration.

[newnano]

i was so excited. last night i went home and took off the fan cover and fan and NOTHING. same thing. back to square one.

matt-- i do have a ball valve on the returns but i have close one of them so much to get rid of the noise that it defeats the whole purpose

[monkeyreefer]

Originally posted by newnano

i have 1.5in coming out of the tank (60gal cube) half way down. this 90's down toward the pump with spa flex to a what i call a disconnect but its a union. then its hard 1 in pvc to the intake of the pump.

the pipe to the intake side of the pump should never be reduced, id change over to all one inch and se if it is still an issue