I purchased a separate finishing box which had a little more room. Gave mine away to a friend that purchased refills, etc. who already had the Taylor K-1000, and it was less expensive than the whole kit. Now I am on a journey to find the ultimate storage bin after seeing this one.Meant to take a picture of my test kit and share it a while ago. With my modifications to my pool, decided my TF-100 was looking a little cramped in the small clear box it all came in, especially with a SpeedStir and the Taylor drop based salt test, so I decided to remedy the cramped space, and now feel like I need some more tests or something to fill all the extra room, lol.