Cool filter plumbing idea, makes PWC easier

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helicopter
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Cool filter plumbing idea, makes PWC easier

Post by helicopter »

I envision a plumbing system on my filter pump that is as follows:

I would have one three way valve on my outlet tubing of the filter, one position connects the filter to the tank and another connects it to a section of tubing that I have go out my window (or could go to a bucket or a drain if your housing situation permits it). Another three way valve would go on the intake tubing of my filter. One position of the valve would be normal filtration operation and the other position would connect the intake of the filter to tubing which would go to my 6 gallon jug where I prepare my brackish water in (This could go to any type of reservoir where you store/age water or even all the way to your sink).

Therefore:
Lets say I want to do a 3 gallon PWC, all I have to do is switch the first three way valve to vent the outlet water out my window until I get about 3 gallons. Then turn it so it connects back to the tank. Then take the other three way valve and pull water from my 6 gallon reservoir until I fill the tank back up.

The benefits that I see to this plumbing situation:
1) The tubing which I will use to connect to the 6 gal reservoir will actually be my gravel cleaner (which has a one way valve), therefore I can just as easily do a gravel vacuuming with this tubing just by turn the valve.
2) When I do gravel vacuuming (which would normally be during PWC) all the crap I vacuum will go onto my filter. This could be a benefit or a deficit depending on how you look at it. I see it as a benefit because sometimes I suck up things I still want like big sections of free floating java moss and other plant parts. I could just pick it out of my sponge in my filter.
3) Makes PWC a breeze, all you have to do is turn a switch.
4) I don't need an extra pump to pump from my reservoir to my tank.

I bought all the supplies I needed plus extra stuff from http://www.mcmaster.com for about $50 shipped. Not bad.
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Post by Nick »

I like it in general, but I am against vacuuming into the filter canister, personally. You can reduce total dissolved organics, preemptively remove nitrate/nitrite/ammonia, and overall keep better water quality if the fish poo and food debris in the gravel are taken strait out of the bioload, especially since changing the filter media or rinsing it out at the same time as vacuuming the gravel is a bit more meddling with the biofilter than I like.
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helicopter
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Post by helicopter »

For my situation I use my Nano cube's internal filtration system as the biofilter and my XP2 solely as a mechanical filter. I see what your saying, I might still do regular gravel vacuuming during water changes so that the poo and detritus goes directly out of the system but now (if I choose to) I can do a gravel vacuuming anytime I want. Granted it won't be out of the system, it will still be in the filter.
helicopter
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Two updates

Post by helicopter »

Here is a recap of my success/failure from the past 3 weeks

Wed May 02, 2007
Well I got all of the parts in and set everything up, major failure. The problem was that I did not realize that the three way valves that I ordered, although having 1/4" NPT holes (that's just over .5" because NPT is weird) had major restrictions inside where the ball actually is located. The result was majorly reduced flow rate. I am down but not defeated. I am going to try to return some of the parts to McMaster and I just ordered a Pondmaster Adjustable Diverter Valves which is rated for much higher flow rates so I should be fine with this one. Hopefully no further problems. I will keep you updated.

Well I got the Pondmaster Adjustable Diverter Valve in with all the fittings and clamps. I am pretty disappointed by it. I could tell just from testing it by pressurizing it (by blowing with my mouth) that the valve did not seal. My initial installation verified this. Not only would you get a constant drip coming out of the port which was supposed to sealed by the valve position, I also got leaks coming out of the housing itself. I took everything off and opened up the valve, it looks like a pretty crappy design on the inside. The o-ring that is supposed to seal the housing looks too small and things do not seat properly. I coated the o-ring with a thick layer of silicone lubricant and put everything back together. I also put a lot more Teflon tape on the threads. I doesn't seem to leak hardly at all now, except maybe a few drips when you first start a flow. I am pretty *beep* by the whole thing, luckily I still had one of the 3 way valves from Mcmaster which I use to "completely" seal off the section of tubing connected to my reservoir when I am not vacuuming or refilling from the reservoir.

May 08, 2007
Oh the place I ordered the valve from http://store.123ponds.com/ does not seem to be too helpful about defective products. Also $10 of the $30 that I paid them was in shipping so its not really worth trying to "return" the product, plus they charge high restocking fees. I am very annoyed by all of that.
helicopter
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Post by helicopter »

Update:

Well I learned that trial and error coupled with indecision can be expensive. I bought everything I needed (valves, barb fittings, etc...) to do this with soft tubing but I have since abandoned this designs and finally have ended up going with PVC pipe. I bought 3/4" thin walled PVC pipe (schedule 22.5 I think) that follows the rim of my tank, 90 degrees elbows around the back following the rim still, another 90 degree turns the pipe to vertical. Then I have it connect to a 3/4" valve, then a T reduction fitting with 1/2" on the perpendicular side. The 3/4" side of the T follows vertically down to a threaded fitting where I will screw a barb fitting into to connect my filter hose. The 1/2" then has a 90 degree bend to another 1/2" valve. There are two of these entire setups, one for inlet, one for outlet. It is a little confusing to follow this in words so I will post pictures as soon as possible. I will also try to explain better how I plan on using this plumbing system. I designed it so I could easily tap into the system in the future if for instance I want to add a chiller, or if I go reef with my nano cube I can easily do the whole fuge route.

I have cemented all the PVC fittings together and then sanded everything with 400 grit sand paper. This is so that the paint will adhere to it. I used rustoleum plastic paint which is supposed to have a "hammered metal" finish. I used grey hammered metal and it matches my nano cube pretty well. The entire setup has been spray painted and is hanging up to dry. I still haven't figured out what I want to do inside the tank (intake screen and spray bar) but when I do I also have black Krylon fusion which is aquarium safe (and reef safe).

I am going to mount the entire thing with these little sticky mount pads that have holes in them to zip tie to. It should look pretty slick when done.

It is kind of sad though, I could have done this so cheaply had I know what I wanted to do from the beginning (and wasting probably around $50 or more on valves, fittings, and tubing that I didn't use). The PVC method was actually very cheap.

10 ft of 3/4" thin walled was about $1-$2
10 ft of 1/2" thin walled was about $1-$2
Various PVC fittings and valves from Home Depot - $10-$15
Krylon and Rustoluem paint - $9

It is sooooo much cheaper and soooo much easier to go to home depot than being plumbing from aquarium dealers. I am so kicking myself for paying double (or even triple) for stuff I didn't even use!

Anyway, I will post pictures as soon as possible.
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Post by manutius »

This sounds great, I can't wait to see the pics 8)
helicopter
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Post by helicopter »

Image
Everything is 3/4 inch thin walled PVC except the little arms that come off the bottom. You can see four valves. The main valves are to shut off the main flow. The valves on the side are to open up suction to take water from another reservoir (brackish fill jug) or to vent water out of the filter. You can see that everything is painted. I sanded everything and then painted with Rustoluem hammered metal grey (for some reason it looks brown in the picture) spray paint.

Image

Image

Image

I will show you more pictures when I mount it to my aquarium.

Image
This is how it is going to fit to my tank, the plumbing will run along the rim.
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