I will be replumbing my 55g on Monday, and I will be switching from a cerges style reactor to a Rexx Grigg style. When I come out of the top of my Fluval 205 I can either use the 5/8ID x 7/8OD vinyl tube and "bend" a 90* turn with it, or I have some 3/4" barbed 90* elbows that I can make the turn with.
I know the 90* elbows will put a bit of resistance against the water flow, BUT the vinyl tubing will also collapse down a tiny bit when it makes the turn too! So which one will be the lesser of the 2 evils?
The 3/4" 90* elbow has a ID of .590", where the 5/8" tube is .625".
But even though the 5/8" tubing will be not perfectly round in the turn/bend, shouldn't the ID still be 5/8", so would be less of a restriction???
The over length of the tube coming from the output of the 205 to the reactor is 11". The hight of the 205's output is 15.5" and the input hight of the reactor is 21". So there is a 5.5" difference in hight to make the 90* turn in 11" of length.
So can any of you Plumbing Guru's help me out here???
One other thing I was worried about is the pressure the turn in the vinyl will put on the quick disconnect in the top of the 205. There will be some side pressure exerted by the bend, and that could cause a leak in the o-rings that seal the quick disconnect over time, correct????
I would greatly appreciate any help yall can provide!