The next mix I made I put in more of oyster shell and I am happy there has been no problem with nutrient intake,green and healthy. I am using less heavy stuff from my first TLO mixes as in composts and amendments. I am going back to my roots kinda in my fert regimin now. I once said I thought I could do a whole grow with 2-3-1 Neptune's Harvest. Perhaps but I'd add some 0-0-1 maxicrop during flowering ,castings in veg and I use phosphoric acid for pH down so my 2-3-1 becomes 2-4-1 and 2-5-1 plus extra kelp.