The HPS isn't what you'll want for cloning, light intensity aside.
That's a New Wave T5 placed at 5 1/2 feet above the canopy. Even at that distance, lighting a ~6x8 room, it's more than adequate light.
Temps will cause serious clone problems. Think of cloning as a race. The plants WILL grow roots eventually or they WILL rot eventually. Which happens first depends on your style. It's a race to get them rooted and into their new homes before they start to rot. High temps speed up fungal growth. Low temps slow down rooting. Get it? The happy medium is where sure, fungus COULD grow, but you cleaned the dome or cloner well enough to give yourself the 2-3 weeks you need for rooting before it sets in.

I would either put the EZ in a shaded corner, if you can control temps, or stuff it in a spare closet under 1 or 2 Ott lights or a CFL, where you know the temps are stable. My T5 fixture is way overkill for most cloning applications; I usually use it to start seedlings and would stick a 4' shop light in the same spot instead when it's tied up elsewhere. But it's not the seedling time of year any more, lol.