bulb switch

[polskatrawa]

i am about to switch the timer to 12/12
i need to swich the bulb from MH to HPS and do not know if i have to do it now or after the plant has been sexed

[Da1KrayzieThug]

Once you switch to 12/12 you should switch the bulb. Goodluck.

[Herbus]

Do you have a switchable ballast or two ballasts? Or a conversion bulb?

H