The specs on the M1 pump seem a little oversized for your 50 gal application, but I realize it is a DC controllable model. Vinyl tubing has the most drawbacks and potential for failure in reef tank plumbing. Hi Paul – I would probably re-plumb the return line if possible with 1″ flex PVC. I greatly appreciate this awesome website and used it for my build. Should the union be above the water when the pump is off or when it is on? When I transition from 1.25″ to 3/4″ is it better to make that transition close to the pump or higher after the union, (after the take off to the ATS)? That way If I restrict flow to the DT I would divert more flow to the ATS. How would you plumb the M1? I am trying to minimize the restriction to flow and I want to vary the flow to the ATS so I thought I would install a valve after the take off to the ATS (on the return line to the DT). I am using vinyl tubing for the return to the DT. The return connection to my DT is 3/4 inch. It is a 50 gallon DT with with a ~15 gallon sump, herbie set up. I want one pump to minimize noise in my family room and also my sump has limited space. I want to use this pump for my return and to feed my ATS. The outlet of the M1 pump is 1.25 inches pvc. I have a M1 Vectra return pump by eco tech marine. For these reasons you might just want to avoid using an anti-siphon hole because of these potential problems. This mini-jet of water can create noise, excess bubbles or put water where you don’t want it. The Spray factor – Under pressure, a small hole will also tend to blast out water, similar to a garden hose that springs a leak. Have a backup plan – like sufficient sump capacity to account for this possibility. If this is normally several inches beneath the surface, this can be a lot of water! If the anti-siphon hole is clogged, the siphon continues until some air eventually enters the line from the main nozzle. It is also possible for the small hole to become completely covered by the growth of Coralline Algae. During normal operation at a positive pressure (water going out) this is unlikely to happen, however when flow stops, water will start to suck in through the hole, and it can tend to slurp up any surrounding algae or debris. Watch out – you should be aware that a small hole is very susceptible to getting clogged by debris or some kind of livestock in the tank. They are usually placed about 1/2″ beneath the surface of the water to avoid turbulence or create micro-bubbles. These holes are usually made around 1/8″ in diameter - as anything smaller might not be able to reliably break the siphon. As soon as this hole sucks in air, the siphon will be broken. – A small hole or two can be made in the pipe just under the surface of the water. A single return line is inconspicuous and easy to hide out of sight.Unless you have a 300+ gallon system or an 8′ long tank, there is no need to use more than a single return outlet.In order to compensate for this, you would need multiple outlets – which are unsightly and provide no benefits Splitting the return can unnecessarily add to friction loss of the return system, lessening the output of the pump.This is a good indication of why you need not worry about multiple outlets or placing an outlet as far away from the overflow as possible. This happens whether the the return is one outlet or many different ones. With adequate powerhead flow, all that water will mix together into a uniform haze in a few seconds with even low amounts of flow. If you inject a visible additive like an Alkalinity solution down at the intake of the return pump, you can observe just how quickly water mixes in a tank. This is generally not necessary, and I will show you why. These are found in the electrical conduit section of hardware stores. At the very least, you should mount the return line to the stand somehow using a PVC mounting bracket that screws in.Make sure to glue the fittings when you’re done. In order to get a custom fit, you can play around with how far the pieces insert to one another, or even cut pieces to make them more compact. The parts that form the U shape should hang on the display tank and should fit snugly so it doesn’t move around. Street 90 elbow fittings allow the pipe to point 180 degrees in a tight curve without extra pieces of PVC.You want to make sure that the line can’t be knocked loose, which could result in a flood. Ideally you want it permanent, with the ability to disassemble it if needed. Since this is where all the water from your tank passes through, it’s best not to cut corners with how you mount the return outlet to your tank and make sure it’s completely secure. Mounting the Outlet to a Tank with Trim at the Top
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |