MorningstarCannabis Mars hydro seed starter kit was a bit too small. I used the clear solo cup method instead. The root riot cubes seemed to work. I didn't use a heating pad. Instead, I used the paper towel method and placed them on my grow light in my tent. Light was at 40% discharge. Whoa! this method increased the germination drastically. I had to be careful to not overheat and dry them out.