If your ph's are accurate, I'd try splitting nutrients in half and watering twice a week. That way you are adjusting ph with half as much Tiger Bloom. (I've been fertilizing this way for many years using Fox Farms) :thumbsup:

But if using a color-coded test kit, after you add the nutes (if they are tinted) it throw's off your color coded results, so doubtful you are really bringing ph down that far.

Temperature also affects ph readings. (regardless if using test kits or ph pens...) I try and ph in the mornings before my water get's too hot. Consistency is important. Summer temperature ph readings are .6 ph different than winter ph according to my ph pen. My calibrating solution comes with a handy temp : ph conversion table...but it only goes to 78 degrees f. or so.

Most commercial peat-based potting mixes are buffered already, but the buffering only lasts about 4 months in my growroom, before I notice a ph drop. (measured from last trransplant) Unless you are using a mushroom compost or similar where it's ph is in the low 6's...your runoff should be ok.

If making changes all the time to accomodate the tinted and tainted ph test results, try not ph'ing the runoff, lol. :thumbsup:
(this does not apply to those with ph pens)