<a href=showthread.php?s=&postid=6848847#post6848847 target=_blank>Originally posted</a> by cmhollis
Question for you MRC Guru's:
My Dual-Beckett MR-3 w/ Blueline HD70 has been running now for a couple of weeks without too much trouble. Anyhow, last night a big gob of chaetomorpha got sucked into the pump intake. I shut things off, took out the pump (thanks to all those that recommend ball valves and unions - I am now a big believer). Cleaned out the mess, started it back up and went to bed. Woke up this morning and checked on things, no problems.
Get home from work this afternoon and the DIY salt bucket/toilet valve waste container was full. Shut off the pump, emptied the bucket and started it back up. Things were good for a few minutes, and then water level dropped to inside the box, and the pump was making noises like it was surging. Took things apart again, no problems, back together, started it up, => same thing......good for a few minutes, then water level dropped and pump is making weird noises.
So what gives? Loose connection somewhere in the skimmer, air valves, what? If it helps I removed the cotton from the air valves as is in the basement and I don't care about the noise. I also have a 100 micron filter sock on the outlet to control micro-bubbles. Skimmer discharges above the water level in the sump so fluctuating backpressure shouldn't be the cause.
Thanks,
Mike