seedling in gravel rock

any p.h. issues with gravel. some pics of last harvest close up

I used gravel rocks for growing for only 25 years:thumbsup:
1 totaly wash you new 3/8 gravel
2 give them a blast of bleach to kill any critters
3 flush the hell out of that. :stoned:

I start out my seed/ clones with perlite vermiulite 70/30 :thumbsup:
Tranplant them in to bloom state after they are 30 in tall after they have been fimed and choped till they get 30 inches.:thumbsup:
Never had a problem and went to hydrocorn as it was easer to clean the rocks. i used a 1/2 hardware mesh over some 2x4 frame:thumbsup:
I did not notice a differance with the timming, fert uptake, and not last but least the final quailty and weight:thumbsup:

lil different. use natural lava rock myself. guess everyone has there own methods, its good to share idea's! seems like the water and air retention of the white rock would be low. have to look into that hydrocorn, as it does take some time to clean our rocks well before use or reuse.