Reactor guage/needle valve/solinoid's

[Jack]

Hey guys/girls how's it goin,

Getting a reactor up and running in about a month or two if all goes well. I've never had one and I was wondering what specific/good qualities I should look for when purchasing reactor accesories; Involving all three mentioned in the title of the post. Thank's for any help.

I hope this isn't a dumb question, but it doesn't hurt to ask.

Also there seems to be three sources that I can find:

(I think this is for the kit dual guage/needle valve/solinoid)

Titus 150$
Jayson SWC 150$
J&L Aquatics 190$

Please let me know if my price quotes are off, or you know of a place to get them cheaper. Do I need another needle valve to adjust the effluent ml/hr?

Have a good one..

-Jack