I’m out of BioHeaven

If there is any advice I can give you, it is that "all are necessary, but none is indispensable" ... as much as it is good for the plant, it can grow just fine without it (I only used it once without any particular difference) especially if it already had it during growth :) you can continue to fertilize using all the other biobizz products without any problems :) then very often I mixed fertilizers from different companies, the only thing that matters is the amount of macro/micro nutrients and other substances they contain, finding a substitute if you really care is not difficult, you can even try homemade solutions! On YouTube I loved the videos on how to make compost tea for example :)