Ballast broke.

How long is too long to go without the lights. Two of the 4 lights aren’t working. Not sure how fast I’ll get ballast if I order them

As long as you have somthing you should be ok for a while. I have something you could use if you needed. Its nothing fancy but a light

I’ve gone dark on my tanks for a few days at a time to combat algae. If you have some light, I think you’d be fine for a week or so.

Ok. And of course this would happen when I’m trying not to out money into it anymore bc I want to go to led. Just saving money to do so.