I'm getting ready to build my BeanAnimal setup. However, I noticed that he uses 1" bulkheads and expands them to 1 1/2" fittings. Why? Can I just stick with 1" fittings? It reduces the back space and looks more elegant. I only need about 1000 gob for my tank.
This is explained 100's of times in the main thread. The bulkhead size (along with the length of the drop) limits the maximum flow capacity, and the pipe size determines how close to that "theoretical" limit you can get.
But that is not the only consideration. A 1" durso, has a very limited range. In a BA system, this would make the open channel very touchy adjustment wise, so it is best to go larger with the open channel. It really makes little sense to use different sizes for the drain lines, so 1" bulkheads, with 1.5" pipe, for all three, makes the most sense. Less plug risk as well.
hey, same handle here too?
The reasoning behind this, from what I have read is that it is more difficult to keep a 1" pipe or smaller quite. You can expand to 1.25" which will be better than just 1" so that you don't have to go to the 1.5" that Bean uses. That is what my current setup will be as well. If I ever finish it.
I just finished setting up my 120 with a coast to coast overflow, bean animal system running 1200 gph. From personal experience:
- 1.25" will be plenty for the siphon, but go with 1.5" plumbing for the open channel. It's not that much bigger and gives you a larger range over which the system runs silently and make it easy to tune. 1.25" sanitary tees are also difficult to find. As uncle said, the larger pipes are less prone to plugging as well.
- Definitely use a gate valve. Makes it much easier to adjust. I have a 1" gate valve instead of a 1.5", primarily because I didn't want to spend the extra $20 for the larger capacity I didn't need. Note that this does create a stricture point in the siphon line that is theoretically more prone to plugging, but I figured that what ever could get through the 1" bulkhead could also get through the 1" gate valve.
After spending a small fortune on these plumbing supplies, I just got the "critical supplies" for the 1.5" True Union Ball Valve (3) and 1.5" Gate Valve (3). I bought the Gate Valves when I saw the size and felt the weight of the Ball Valves. Both are unwieldily, heavy and, not to mention unsightly. They also take up about an extra 4" of space behind the tank. :hmm6: I realize that Bean & his cohort, Uncleof6, did a great deal of research and planning regarding their system, but I am not about to build a separate room to disguise this plumbing @ 1.5".
I've read through the 333+ pages on the main thread, and I'm not a lazy, stupid physician. All I would like to know is if anyone has come up with a simple modification to this system to help me reduce the build. I need about 800 - 1000 gph of flow since this is a FW Amazon Basin setup for Discus (yes, I realize this is a reef forum, but the principles are similar, and there is very little on the FW forums to help. Thanks in Advance.
Excellent, Fishgate! Thanks!
SpikeDangles...to answer your question, use reducing couplers, bushings and elbows. They are only different if one side is threaded and the other side of the bulkhead is slip.