Is there any reason to not buy larger quantity refils for my K-2006 kit? I am SLAMing now, and have already run out of the CYA reagent, and getting close to being out of the FAS-DPD reagent. I found 16 oz bottles of each on sale at poolpartsonline for very cheap (R-0871 for $20, and R-0013 for $8), also going to pick up another bottle of the DPD powder for $7. Is that ok to do, or?