yeah i wouldnt go dumping lemon juice or baking soda on your plant you would add it to water untill desired ph then flush by pouring it through your containers. their are additives mix in's and stuff dolimite lime epsom salt i dont know about them the organic guys would. my best advice to you would be if it aint broke ....dont fix it or better yet dont fu#kin break it. sounds like your dirts about perfect hows plant look? how are you mesuering your soils ph? make sure your water\nute solution is ph around 6.0-6.8 and your good