need help on PH rotator, 45 degrees

[MDLR1]

Looking to build something to rotate my powerheads only 45-90 degrees, anything more i think would be too much.

Ive seen the seaswirls and the osciwave rotators and think they would work ok but was wondering if there is an easier way or somethign that already exists.

[n240sxle91]

They sell a PH that moves by itself. I think the brand is Zoo-med or something. Marinedepot has them. Anyway, I guess they don't work so well. Maybe on a smaller tank (less than 55 gallons). Another thing they used to sell was a motor that actually moved the PH you already have. However, I'm not sure if you can buy them anymore. The seaswirls work great I guess. I've never hear anyone talk bad about them. Otherwise you could do a closed loop and run a SCWD. Hope this helps at least a little bit.