Handy Plumbing Tips

Stolireef

Active member
Quick disclaimer: I'm not a plumber nor a particularly skilled amateur. What follows are my humble opinions based upon both long term and recent experience with a major new build. Other than the first point, these are in no particular order.

1. Good plumbing starts with good planning. Think through how to reduce the number of elbows in your lines, access to pumps, etc.

2. Rough fit all of your plumbing before cementing it together (nearly every time I've skipped this rule, it has ended badly).

3. In most reef tanks with sumps, your return pump should NOT be your primary method for in-tank circulation. In fact, slower return flow will allow your filtration to do a better job and will go quite far in keeping your tank quiet. If you hear a flushing noise coming from your drain, your return flow is too high.

4. Prime all of your PVC joints before cementing.

5. Install cutoff valves at all key points. In my setup, there are ball valves before and after the return pump, at the drain, before the fuge feed and before the Ca Reactor feed. The valves also make adjusting the flow very easy.

6. If feasible, dry plumb your return pump. It reduces heat transferred to your water, makes pump maintenance a breeze, and allows for much more variety in positioning and use. It also leaves more space in your sump.

7. Install true unions before and after your pump to make removal easy and fast.

8. The rubber gasket on your bulkhead goes on the wet side between the tank and the flange.

9. Cemented fittings are more reliable and less likely to leak than threaded fittings. That said, they can't be removed so remember rule number one.

10. If you feel the need to use a hammer when plumbing something, stop, have a beer (or something stronger) and then figure out another way to do whatever it was that you were about to do with the hammer.

11. Teflon tape will probably not fix a lead in a threaded fitting. In most cases, neither will salt creep. Neither plumbers putty nor silicone seals leaks for the long term. Leaks very rarely fix themselves.

12. In new setups, do a fresh water water test before adding salt. First, if there is a leak and you have to drain the tank, you haven't blown money on salt. Second, saltwater does much more damage to things like wood floors, carpeting, metal stands, etc.

13. A medium coarse hacksaw blade cuts PVC like butter. A worn out blade causes significant shoulder discomfort. A curved metal rasp works great for cleaning the burs off fresh cuts.

14. Clear vinyl tubing, when exposed to light, will grow algae inside the tube. Wrapping such tubes with black eletrical tape really cuts down on this problem. Using opaque tubing works even better.

Feel free to add to this thread. I'm sure many of us would love to hear your plumbing tips and tricks.
 
Best investment I've made was one of the ratcheting PVC cutters, especially when making all the cuts needed to plumb in a whole system.

Always measure twice before putting glue on pipes, or skip this step and buy a bunch of extra couplings.
 
Best investment I've made was one of the ratcheting PVC cutters, especially when making all the cuts needed to plumb in a whole system.

Always measure twice before putting glue on pipes, or skip this step and buy a bunch of extra couplings.

Too true on both points. I will say that the good hacksaw blade does make cutting the PVC easy. That said, it's never as straight as when you use a PVC cutter. I'm just cheap plus I needed some exercise.
 
Very nice write-up. As someone who's been following all these steps so far with my new build #2 is far my favorite one
 
I grew up in a family of plumbers even though im not one but have still done a bunch of it in my life. Use clear primer if you use purple hold the fitting or pipe so the side your using it on is down so if it drips it goes on the ground so do outside it doesnt come out of anything. The best thing to cut pvc if you own one is a chop saw all cuts will be perfectly straight if not a pvc saw hack saw works. When applying glue glue both sides push the fitting in and a half turn woth pressure to make sure the pipw is fully into the fitting. The best trick also is to dry fit the entire tank then take a magic marker and draw a line from the fitting onto the pipe that way your fitting is always pointing in the right direction. Use a level crooked piping may drive you nuts later. Make sure if you have valves close to each other they can turn all the way open or close without bumping into each other.
 
12. ... Third, to flush the dust, shavings, contaminations, etc. out of the system (pipes, filters, tanks, etc)
 
perfect timing, just bought all the piping and fittings to plumb in my new-to-me sump, was already planning on dry fitting everything. Your list is a great reminder/checklist for those doing a setup or modifying an existing one.

Did you find priming pvc really helped a lot? I have done pvc plumbing dozens of times inside and out and never used a primer, but for $5/can it might be worth it for that extra peace of mind.
 
Also keeping mind dry fit connections will be slightly longer than cemented connections. Also PVC cutters wok better than a saw, no shavings to worry about.
 
Did you find priming pvc really helped a lot? I have done pvc plumbing dozens of times inside and out and never used a primer, but for $5/can it might be worth it for that extra peace of mind.

For me it looks like it helps. I used clear primer so I didn't have to worry about how it looked. What it appears to do, aside from cleaning the PVC of debris, is soften the PVC a bit and adds a "bite" to it, which gives the glue something extra to stick to. My understanding is that it creates a stronger bond, essentially melting the two pieces of PVC together, creating one piece.

It really doesn't take much longer to use primer, and with the clear stuff you don't have to be very neat (the purple stuff is messy). The only bad part is that it has a very strong smell, almost like it's burning off my nose hairs (which may not be a bad thing!).
 
+1 on a chop/miter saw to cut PVC.

It creates very clean cuts. I used to use PVC cutters and I would always end up with curved ends. The only drawback to using a chop saw are the plastic shavings it creates -- I literally had plastic sawdust all over my work area.
 
Bring bulkheads or parts to the store to dry fit and ensure you buy the right piece. Try to buy valves at a plumbing supply store or online, they tend to be a lot cheaper. Buy more unions, elbows, or tees than you think you need - you can always return them later if you need to and it saves you an hour trip having a few extras around.

Make a list/diagram before you go to the store - you'll never remember everything if you don't.

Oh, and never trust the crappy bulkhead that comes on a rubbermaid stock tank.
 
+1 on a chop/miter saw to cut PVC.

It creates very clean cuts. I used to use PVC cutters and I would always end up with curved ends. The only drawback to using a chop saw are the plastic shavings it creates -- I literally had plastic sawdust all over my work area.

I've used a chop saw several times with PVC but I've had some scary moments with kickback. What type of blade do you use (how many teeth, etc.).

I really think primer results in a much stronger joint.

As far as bulkheads are concerned, in the future, I'm going to really try to only use Schedule 80. You just need to be careful that your holes are large enough to accomodate the bigger fitting. They really are that much better and well worth the price considering the damage that can occur if a bulkhead fails.
 
... Buy more unions, elbows, or tees than you think you need - you can always return them later if you need to and it saves you an hour trip having a few extras around.

Make a list/diagram before you go to the store - you'll never remember everything if you don't.

I always buy extra fittings such as elbows. That said, on any given plumbing project (or any other project for that matter), no matter how good my diagrams are and how complete my lists, I still end up making at least two extra trips to Home Depot. If I don't show up, they start calling my house to make sure I'm OK.
 
I always buy extra fittings such as elbows. That said, on any given plumbing project (or any other project for that matter), no matter how good my diagrams are and how complete my lists, I still end up making at least two extra trips to Home Depot. If I don't show up, they start calling my house to make sure I'm OK.

Well, yeah stuff always comes up, but at least you had a plan when you went the first time!
 
I always buy extra fittings such as elbows. That said, on any given plumbing project (or any other project for that matter), no matter how good my diagrams are and how complete my lists, I still end up making at least two extra trips to Home Depot. If I don't show up, they start calling my house to make sure I'm OK.

Sounds like me..I have three 5 gallon buckets full of fittings, but never the one I need, and if I do have the correct fitting, I'm either out of glue or about 2" short of pipe.

another tip, if you aren't using your glue/primer very frequently, make sure the top is on good and store them upside down. They seem to keep much longer this way, or atleast mine does.
 
another tip, if you aren't using your glue/primer very frequently, make sure the top is on good and store them upside down. They seem to keep much longer this way, or atleast mine does.

And the easiest way to open a tightly shut can of either glue or primer is a pair of channel locks.
 
True unions and ball vavles ROCK!!

Put a piece of shrimp in a media bag tonight to keep cycle going on new tank. Bag got sucked into my return pump and shut it down. Turn of a couple of ball valves, spin off the true unions, pop out pump, pull out 'idiot bag', put it back together and problem solved. Under five minutes and so little water spilled that one Shamwow soaked it all up without anything on the stand.

New plumbing tip. Make sure you have a strainer on your pump intakes (especially your return pump).
 
Also really think about future projects. Is why the reactor plumbing is already installed. Should be plumb and play.
 
Built in overflows

Built in overflows

I have a 210 with built in overflows. My pump is a external blue line 40HDX when I open the valve all the way it seems like the dorsol pipe can take all the flow. It will drain slow and at once dump lots of water into the sump. Is this a air problem with the hole on top of the drain pipe. Any suggestions?
 
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