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  1. S

    DIY cone pyramid skimmer

    The pump is definitely a 1500gph water flow but air flow is unknown. I am waiting for a Dwyer within the range I am looking for with a decent price. Getting 1500LPH of air suction would be cool base on RC mod. I need to mod the volute & cut the impeller so that I can zip tie the mesh. I may...
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    DIY cone pyramid skimmer

    Looking at the picture, how does it lock? Lock - circle to circle with bottom gasket? Is it slightly eccentric/oval? Here is the picture of the bottom lip Will the bottom lip work with the lock? Do I have to mod it?
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    DIY cone pyramid skimmer

    OK, back on topic for the next build. Received a bunch of acrylic tubes and a large polycarbonate cone. I will have to work on it next week or Thanksgiving weekend. Below is a picture of a mock up with 2L soda bottle for scale. I am not sure if I am going to keep or cut the bottom flange...
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    Skimmer discussion thread

    Speaking from past venturi experience with Fathom skimmer mods, downdraft mod, AquaC mod and the latest mesh mod; they all use a form of venturi. Fathom skimmer has a venturi hooked up at the outlet of the pump and the air water mix goes into the body of the skimmer and swirls around in...
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    Skimmer discussion thread

    Venturi effect is when water pressure drop at the air narrowing inlet cause by the increase of speed of water (distance over time). The faster the water travels over the inlet the greater the air intake because of lower pressure causes air suction. Increase speed; increase air suction. Higher...
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    DIY cone pyramid skimmer

    Do you use skimmer or just air stone only or air stone + skimmer? Skimmer adds a lot of air. In the graph my DIY skimmer raise the ORP of my tank, I think.
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    DIY cone pyramid skimmer

    I understand that kalk has no effect on ozone. I meant ozone raises ORP. Since ORP increases the pH lowers. Since the pH is lowered, dripping kalk should raise it ( less than 8.5). Am I off on the logic? I don't have an ozone pump; so I really don't know how much pH will drop if I try to...
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    DIY cone pyramid skimmer

    Ok, if you are running ozone to raise ORP then the tank's pH will drop when the ozone runs. Would you drip kalk and/or ozone within a skimmer to blow off excess O3?
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    DIY cone pyramid skimmer

    Boomer, Since pH and ORP has an inverse relation (mirrored image on the graph), do I need an ORP probe? Besides getting an ORP value. Sounds like pH meter is a better investment if one has to choose between pH or ORP meter.
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    DIY cone pyramid skimmer

    Don, Are the dimensions cast in stone? Coneskimmer looks promising. They have the ATB like neck flange as well. Does the neck flange includes the oring? I found a seamless polycarbonate cone with 13" base flange (12" base). 21" tall. I need to cut the top of the cone for 5" neck. If I do that...
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    DIY cone pyramid skimmer

    This is interesting the pH dropped the ORP increased. Water was last changed on Oct 18th. Can someone explain the chemistry relationship between ORP, pH and skimming? Is the attached graph normal? P.S. still waiting for acrylic tubes for the next build.
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    DIY cone pyramid skimmer

    I think the skimmer is running optimally. Adjusted to 39 watts. Skimmate brownish green and slightly wet. The ORP jumps from 246 to 346 in 5 days without water change. These are macro photos of ultramicro bubble that has been adjusted to have a laminar (non-turbulent) flow. 15" of micro bubble...
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    DIY cone pyramid skimmer

    Luke, Gathering more info for the next build. If I use the Laguna 5000 (~1500gph) meshwheel, what would be my skimmer inlet, recirc and outlet pipe size? I am thinking output to skimmer would be 3/4" or 1"; same for recirc. But, out let from the skimmer would be 1.5". Mod for the Laguna...
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    DIY cone pyramid skimmer

    I did notice that if the recirculation loop is fully opened, I get very dark skimmate "black coffee" as pictured in the first post. But if I throttle it down I get lighter skimmate. So longer retention means darker skimmate. Is darker skimmate better? Does it mean more junk in it? So if my...
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    DIY cone pyramid skimmer

    Luke, I am gathering some idea. Since my eternal Pyramid skimmer recirculates, is there a recirculation ratio to new incoming water from the tank. In other words, do I throttle the recirculation input from the skimmer. Is there a logic besides retention time for recirculating the water?
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    DIY cone pyramid skimmer

    I liked the 2400 @ 100watts but a little spendy. Spent all my budget on four Laguna 5000 @85 watts. I have to use at least two pump to justify the build. Looks like I will need to borrow or buy the Dwyer air flow meter for the mod. What would be a good range scfh or l/min?
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    Cone Skimmer thread, up for Discussion!

    Charlie, Here is a picture from Marinesolutions: left is meshwheel & right is the pinweel. The meshwheel is attached to the magnet impeller.
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    Skimmer discussion thread

    Here is Jonathan Manke (Hanmeister? on RC) have to say about WM VBT October 14, 2008 at 4:53 pm "I dont get it myself. I agree a little bit with Concrete on this one… it could be considered an innovative distraction from the idea that it is a ‘cone clone’. Im not so sure what ‘horizontal...
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    DIY cone pyramid skimmer

    Next build maybe if I am very ambitious.:D I just ordered a polycarbonate cone 13.5" diameter and 24" tall. Maybe a real cone with Laguna 5000 mod. 2nd pyramid with the Laguna 5000 mod somewhere between ATB Med & large diameter.
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    DIY cone pyramid skimmer

    Les, I could trade the prototype for a few female flame and a pair of rhomboid wrasses.:badgrin:
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