[quote]
Quote:
Originally Posted by scolley
Please let me know if that bleach and pressure wash works for you Steve. Bleaching and using a normal hose did squat for me.
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Steve,
After bleaching and then pressure washing my 25-micron cartridge with a 3,000 psi, gas powered pressure washer
, I did keep the fan nozzle a few inches from the cartridge so as not to destroy it
, the cleaned filter cartridge started out at 3.5 psi which is the initial run pressure of a new 25-micron pleated cartridge on my system.
The washed cartridge lasted about 10 days before the pressure started to creep up to near 5 psi. My pump, an original Lifegard QuietOne, shuts off at about 6.5 psi. I start to see significant flow drop at 5 psi.
From my limited experience with the Ocean Clear / Nu-Clear pressurized type filters, I have come to the conclusion that a high-head pump is required to make these types of filters perform at their best. Specifically, the Poseidon PS2 or PS3 (21~24-ft head) or one of the Iwaki WMD-40Rs (21-ft head). I believe Plantbrain is going to use the Iwaki on his new 180.
Based on my calcs from the performance curves available for the above pumps, one should see flow rates and pressures as follows:
QuietOne----240 gph----10' head---- 4.3 psi
PS1 --------240 gph----17' head-----7.3 psi
PS2---------240 gph----22' head-----9.75 psi
PS3---------240 gph----24' head-----10.4 psi
WMD-40R----240 gph----21' head-----9.1 psi
If it wasn't for the potential of the Poseidon pumps raising the tank water temp 4~6 degrees, I would have already replaced my QuietOne with a Poseidon PS2. I wish there was more data available about the water temperature increasing issue with the Poseidons.
Quote:
Originally Posted by scolley
I hope you are right about the cartridges interchangability. I've got a 2nd OC340 that I've been ready to install - replacing the Eheim Pro II. But I've ordered the foam inserts for an OC 318 because it's got 200+ sf. ft. of biological media vs. the 30 or 40 in the OC 340. I don't really need any more mechanical filtering - don't think so anyway.
So I'm hoping to find this stuff is really interchangable. Thanks for the tip!
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The Ocean Clear Polystrand filter pads can be used in the Inland Seas / Nu-Clear canister filters as long as you buy one of the 'Full Flow' grids for the Nu-Clear -- $14. I believe that the OC 25-micron 40 sq.ft. pleated cartridge should also work just fine in the Nu-Clear.
I recently ordered one each of the OC 317, 318 and 319 filter replacement pad sets and have had good results with the OC
318 50-micron pads combined with my less than perfect pump. They do a nice job of keeping the water clear and should be much easier to clean than the pleated cartridges.
Reference:
OC 317 pad set
http://www.aquarium-supply.biz/Ocean...p/roc82317.htm
OC 318 pad set
http://www.aquarium-supply.biz/318_P...p/roc82318.htm
OC 319 pad set
http://www.aquarium-supply.biz/319_P...p/roc82319.htm
Steve