I found this thread after searching for hours last night trying to get instructions on how to add the trifecta.

Is it really this simple? I was thinking I had to use all kinds of math to get the percents of each ingredient and then it would add up to 100% based on total grams needed... very confused.

My friend found the sheet somewhere, not not on the lodo sight....

You set the ppm number, find your water volume and add the number in grams of both SKM and AA. Then use the BTB tab to do the same based on your desired dosage number of gh/l ??

thanks haeffnkr

No calculator required (just forget the percentages, as they aren't really useful):

1.) Determine desired ppm of SMB/PMB and calculate grams:

For Powder - Grams = ( PPM (MB) * Volume (l) ) / 1000

For Campden - Grams = ( ( PPM (MB) * Volume (l) ) / 1000 ) / 0.75

2.) Add same gram amount of AA

3.) Dose BTB per manufacturer specs

4.) Calculate pH Drop:

pH Drop = - ( PPM (MB) / 100 ) * 0.1

5.) Calculate Minerals:

For SMB - Na = ( PPM (MB) / 100 ) * 24

SO4 = ( PPM (MB) / 100 ) * 101

For KMB - K = ( PPM (MB) / 100 ) * 35

SO4 = ( PPM (MB) / 100 ) * 87

RECAP:

1.) Forget the Trifecta percentages, i.e. they are a hindrance, not a target

2.) Decide on SMB/PMB PPM value

3.) Calculate grams of SMB/PMB

4.) Duplicate that value with AA

5.) Dose BTB per specs

6.) Calculate and factor in pH drop

7.) Calculate minerals