@Riggaman Welcome to AFN. To get someone’s attention put the at-mark @ in front of their AFN name like I did for you.
I will assume (always bad) that since you are buddies with
@Ripper that you washed and precharged the coco. Since you are in a dry climate be careful not to let the coco dry out it is hard to re-hydrate if you do. You might want to get a wetting agent like castile soap (not detergent) to use as a precaution. Just a couple of drops per gallon.
Botanicare has an excellent online feed calculator. I recommend starting at 60% of that chart and bump up 10% each week until a little tip burn then back-off 10% I ran a little quick chart for 1 gallon;
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Tag me if you have any questions for me.