Maybe im working too hard but i just carnt find the answer to my problems i hope u guys can help 
I ve recently upgraded my tank to a 86 gal woo hoo lurv it but my old arcadia starter went easy solution buy a new one, i know but me being me wants to make things awkward ,so here's my question ( at long last) is it possible to get a starter that will switch two tubes ie one at a time so i can have a duller on on in the evening as i dont often get home till its dark and the lights are on all day and dont wanna give my fish 15 hours of daylight im on a budget so the arcadia I bar is out of the question thanks guys also any diy ideas would be great lol
