Royal-Exclusiv / Vertex Cone Skimmer Club
- Thread starter JohnL
- Start date
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GSMguy
New member
Sorry not my intention to confuse just offering my opinion, the motor block on the 170 is the same as the 1500 but the 170 has shorter pins on the pinwheel and I there are differences in the volute that make it a RD 1000 but it is the same block (lots of torque) I am sure given a chance klaus, proline, and Premium will get the issues ironed out.
I have not had a chance to play with a 170 yet it just seems to me that an easy fix would be to make an impellar that keeps the air the same while reducing the waterflow. That is if it can be done without the surging.
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subman719
Member
Wd40- try doing what I have (which i jus re-checked). If you have a 59mm nozzle in there, slide it out 3mm so it's the equivalent of a 56mm nozzle. If the bubbles are out of control and below the bubble plate, wiggle the nose cone in about 1mm and see what happens. Get the skimmer to be in 8 to 9 inches of water and re-adjust your wedge pipe. If you can, please try this and let me know how it works for you.
subman719
Member
Yes, it does add air and will most likely create more bubbles. Do you have a surging problem or just too much bubbles coming out of the exhaust pipe? If no surging and too many bubbles, try going the opposite way with the nozzle by just pushing the nozzle (not the whole nose piece) in about 1mm to restrict a little more air. (Be VERY CAREFUL not to go in too far and hit the impeller!) My bubbles are about 3/4 inch above my bubble plate and I have very minimal bubbles coming out of my exhaust, which I believe is normal. I've been experimenting witha adjustments and I believe these proceedures can work.
subman719
Member
You're welcome! I believe that if you put the skimmer at 8", you might get more air bubbles due to lower backpressure therefore allowing air pressure to overcome the water pressure. In liquids, the deeper you go, the greater the pressure. As for "how far you can go", keep making minute 1mm adjustments till the exhaust bubbles are reduced and the bubbles are above the bubble plate about 3/4 inch. If you go too far, you'll know it! You may get the surging problem and bubble/foam production will decrease. If that happens, just undo your last adjustment one step at a time till you get it optimized. I found that when I had the surging problem and no micro bubbles coming out of the exhaust, I also had lousy foam production, so some microbubbles escaping are ok! If you're getting microbubbles back into the tank, you may need to put a foam block, mesh, bio-balls or rock rubble in the baffle area going to the return pump. My sump came with the foam block for that purpose so I don't have bubbles fiinding their way through.
Dave's Reef
New member
I've found that my sweet spot is at 9.5". For some reason 9" gives too much air but raising it a half an inch has made just the right levels of water and air.
I'm getting a lot more stuff gunked up in the neck and on the lid now and I never really had it do that too much before. Always a good amount of skimmate but just not much goo in the neck and such.
I've had it this way going on the 3rd week now and it seems to get better each week. Tried it at 9" for a week and had it at 10" for a long time and for whatever reason 9.5" seems to be the sweet spot for me!
Just my .02
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