Yeah as said before I used plans for the rack from Clay Davenport and he has made plenty of these so I was confident in using the spacing measurements he provided. And as well as the way I ran my water system. Everything came together well even though I had to modify my rack to fit the height clearance in my basement I still used all his measurements. All I did was instead of 6 tubs high I went 4 and then added 4 more to it which gave a total of 8 tubs instead of the 6 tubs his was made to fit. But I have plenty of width room in the basement but not enough height so it worked out great for me.