Benzelsanswered grow question 3 years ago Its an Auto so never go more that 50% strength. Never. Thats about 700 PPM.
Without looking up the charts for each nute its a bit hard to say for sure... But make sure the Bloom is the bulk of the mix, and use the others as additives. U can feed one time with just the bloom made up to 700 PPM and the next time you water use just the cal mag and Big bud- but again use it at half strength. Then plain water. Then the bloom mix, then the cal mag/big bud mix then plain water ect. I often split up my feedings when using diff nute brands to avoid any kind of lock out but the main reason is I treat my grow and bloom nutes as nutes. I use them at set times in the grow and all that changes is the amount I use based on what the plants is showing me. And I use additives as Additives. I mean I use them as NEEDED and only when needed. My grow and bloom nutes have full trace mix in them, so cal mag is already in there, but I have cal mag separate too in case plant is showing me it needs more, I dont just add things because.
your always better off using weaker nutes and use them more often instead of stronger mixes less often. Read up on micro dosing nutes, some pple are feeding their plants 5 times a day now with drip feeders and its getting great results... I feed weekly in soil and if plant is looking good I may skip feedings and just use additives that week. Half the fun is tweaking things but u cant tweak much if your mixes are too strong as salt/nute build up will ruin any kind of nute plan your trying to follow ok.
I'll post a pic tomz of my nutes and show ya how none of them really match up, all diff brands then go look at my Zkittlez and tell me u cant mix nute brands. As long as u dont mix them all in same watering can at the same time ur fine if u apply them on their own as needed.