ridetheducati
20 and Over Club
When I had the G4 the meter always fluctuated. About 3-4 lpm swing.
ASM Skimmer Club!
- Thread starter JohnL
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ridetheducati
20 and Over Club
The new and improved 17% performance increase impeller is posting a 10 lpm air draw? Wow. I thought ER was trying to compete with the big dawgs. I can not wait to hear how the mesh works for you.
I heard the RC500 pumps (Eheim) were pulling 15lph each.
I heard the RC500 pumps (Eheim) were pulling 15lph each.
mfinn
Active member
Well, like I said it is bouncing around. Every once in a whilr it does bounce up over 16 a little.
But somehow I feel something isn't right.
I used a drill bit that was about the same size as the hole to clean out the venturi.
If I enlarged the hole, would that lower performace?
ridetheducati
20 and Over Club
Performance will increase. Be careful not to thin out the wall too much. I believe I used a 3/16 bit on mine. The 3/16 bit does not fit in the hole, but I slowly drilled it out. Take it slow.
My meter would spike also, but I never counted the peak just like I dont count the bottom value. Keep an eye on the meter. It will develop a rhythm and you will be able to accurately judge the average. Be aware these values are approximates, but it is good enough for our testing purposes.
Some guys cut the nipple off all together, enlarged the hole to 1/4" and inserted a NPT fitting.
My meter would spike also, but I never counted the peak just like I dont count the bottom value. Keep an eye on the meter. It will develop a rhythm and you will be able to accurately judge the average. Be aware these values are approximates, but it is good enough for our testing purposes.
Some guys cut the nipple off all together, enlarged the hole to 1/4" and inserted a NPT fitting.
mfinn
Active member
I don't think I enlarged it hardly at all. More of a good cleaning.
I read somewhere, that someone drilled one out quite a bit and it produced large bubbles.
That might be here in this thread.
I'll try and get a picture of the gutter guard mod I did.
Have to do some software swapping.
Had a huge wind storm blow through last Thursday and I just happened to be on my pc when a power surge hit and fried my primary pc.
I read somewhere, that someone drilled one out quite a bit and it produced large bubbles.
That might be here in this thread.
I'll try and get a picture of the gutter guard mod I did.
Have to do some software swapping.
Had a huge wind storm blow through last Thursday and I just happened to be on my pc when a power surge hit and fried my primary pc.
RichConley
New member
if air draw is bouncing like that, it means the impellar is cavitating. Its those situations where a meshwheel makes a HUGE difference.
Sivert, on my OTP 3000, air draw went from 15 scfh to 35 schf when I went from the needlewheel to gutterguard, and then from 35 to 50+ scfh when I went from gutterguard to enkamat. Yeah, it makes a big difference.
Seriously, thats 6.5lpm->15lpm->23+lpm.
I can't tell how high it actually is now, as its maxing out the meter (5-50 scfh)
Sivert, on my OTP 3000, air draw went from 15 scfh to 35 schf when I went from the needlewheel to gutterguard, and then from 35 to 50+ scfh when I went from gutterguard to enkamat. Yeah, it makes a big difference.
Seriously, thats 6.5lpm->15lpm->23+lpm.
I can't tell how high it actually is now, as its maxing out the meter (5-50 scfh)
mfinn
Active member
I emailed euroreef and asked about the new needlewheel impeller. They said it was the one they are selling now in the parts section at www.euro-reef.com
It took about 3 weeks to exchange 3 emails.
Tell you the truth,,,, I don't see a difference.
I didn't get the air flow meter untill I'd modded my old impeller, so I don't have any air flow numbers to compare. I really hate it when I do dumb things.
I wish I had waited and measured the old one and I would also like to see if the old one made the air flow meter pulse.
It took about 3 weeks to exchange 3 emails.
Tell you the truth,,,, I don't see a difference.
I didn't get the air flow meter untill I'd modded my old impeller, so I don't have any air flow numbers to compare. I really hate it when I do dumb things.
I wish I had waited and measured the old one and I would also like to see if the old one made the air flow meter pulse.
RichConley
New member
Essentially thats the biggest change with the Enkamat... (or any mesh for that matter). The stuff is essentially impossible to cavitate.
Enkamat is generally used for pond filters, IIRC. Its a hard plastic mesh. Do a search on Aquaticeco for pics. There have been a couple of people who bought large pieces, and are probably selling some.
Enkamat is generally used for pond filters, IIRC. Its a hard plastic mesh. Do a search on Aquaticeco for pics. There have been a couple of people who bought large pieces, and are probably selling some.
Fishbulb2
New member
Hey Rich,
Is there a way to calculate how much air we should be shooting for? Is there such thing as too much air? For example, lets say, purely hypothetically, one had a skimmer with a 3.5" neck, 6" reaction chamber, and 20" height, how do you calculate the optimal air intake. There must be an upper and lower bound I would hope. Thanks a ton in advance,
FB
Is there a way to calculate how much air we should be shooting for? Is there such thing as too much air? For example, lets say, purely hypothetically, one had a skimmer with a 3.5" neck, 6" reaction chamber, and 20" height, how do you calculate the optimal air intake. There must be an upper and lower bound I would hope. Thanks a ton in advance,
FB
RichConley
New member
I dont know.
Its generally a play around with it type thing.
BUUUUTTT... I happen to have a skimmer with a 3.5" neck. How tall is the neck on your skimmer?
Its generally a play around with it type thing.
BUUUUTTT... I happen to have a skimmer with a 3.5" neck. How tall is the neck on your skimmer?
ridetheducati
20 and Over Club
It is never enough air unless you have a mountain of shaving cream escaping thru the top.
The goal is shaving cream.
The goal is shaving cream.
RichConley
New member
The problem is, if the neck is too narrow for the amount of air, you dont get shaving cream, you get a skimmer thats almost impossible to adjust, and is generally just pouring water out the top.
Believe me, I've got a 3.5" neck thats maybe 8" tall, and I've played with anywhere from 8 scfh to 60schf on it (the Deltec Eheims pull 25) and yes, you can have too much air.
ridetheducati
20 and Over Club
Too much air is better than not enough.
Having too much eliminates a variable. Chasing liters per minute is the latest thing in the skimmer world. The available pumps, Eheim and Sicci to mention a couple, allows us to create different skimmer body types to take full advantage of "too much air".
Skimmer height, diameter and neck size will be the next areas of improvement. All roads lead to defeating the BK at a reasonable price.
Having too much eliminates a variable. Chasing liters per minute is the latest thing in the skimmer world. The available pumps, Eheim and Sicci to mention a couple, allows us to create different skimmer body types to take full advantage of "too much air".
Skimmer height, diameter and neck size will be the next areas of improvement. All roads lead to defeating the BK at a reasonable price.
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