Foam cover

[CJ]

Hi Tim:

A friend of mine suggested that using the foam cover to protect fish will in time cause damage to the pump because of making it work harder and restricting flow.

Any truth to this? Thanks.

 

[EcoTech Marine]

The pump doesn't work any harder. It will, however, produce less flow. When the intake or output of a prop pump is restricted the pump consumes less current and puts out less flow, they do not consume more energy.

-Tim

 

[CJ]

Good, thank you. I don't need full flow so I can spare some.

 

[Hal]

<a href=showthread.php?s=&postid=11411818#post11411818 target=_blank>Originally posted</a> by EcoTech Marine
The pump doesn't work any harder. It will, however, produce less flow.

How much less? Assuming I'm running the pump at max (3000 gph), what will the flow be with the foam cover?

My Vortech just sliced and diced my tigertail cucumber. It was crawling on the intake grate and was actually pulled through the grate (in 1/4 inch slices). Not pretty.

 

[EcoTech Marine]

Hal,

We have not calculated the flow with the foam cover on it at this time.

-Tim

 

[Hal]

<a href=showthread.php?s=&postid=11471573#post11471573 target=_blank>Originally posted</a> by EcoTech Marine
Hal,

We have not calculated the flow with the foam cover on it at this time.

-Tim

Perhaps you could?

 

[Maximus]

I've been using it for the past week and just took it off. It seems to trap a lot of debris and slows down the flow considerably. I'd say at least a 25-40% reduction when the foam has a lot of debris on it.

 

[opiumpipez]

<a href=showthread.php?s=&postid=11475983#post11475983 target=_blank>Originally posted</a> by Maximus
I've been using it for the past week and just took it off. It seems to trap a lot of debris and slows down the flow considerably. I'd say at least a 25-40% reduction when the foam has a lot of debris on it.

25-40% sounds about right. i used the cover for two weeks and found it just wasnt necessary.

 

[CJ]

There is a huge difference between 25 and 40%. On what are you basing your estimates? It seems to me, short of measuring the flow, any estimate would be like taking a stab in the dark.

 

[opiumpipez]

<a href=showthread.php?s=&postid=11475983#post11475983 target=_blank>Originally posted</a> by Maximus
I've been using it for the past week and just took it off. It seems to trap a lot of debris and slows down the flow considerably. I'd say at least a 25-40% reduction when the foam has a lot of debris on it.

25-40% sounds about right. i used the cover for two weeks and found it just wasnt necessary.

 

[comstona42]

I noticed when the foam is on my vortech it runs very hot. I removed it and it is no longer hot and I needed to throttle it down to keep the flow the same as well. Some of it was debri in the foam and partly due to the foam itself. Although I have made to attempts to calculate the difference, I did notice an obvious difference. I keep the foam off...