Cal. Deficiency?????

It will be good 👍🏻 I did on plagron Alga Grow and Alga Bloom for this Biobizz ALG-A-MIC, TopMax, CalMag, Bio-Heaven, Acti Vera As in the depths of this conditioner 2 times a week Ph of fluid from 6.2 to 6.5 Liquid temperature 25°C (of course there have been shortages but all these listed supplements on Bloom ie TopMax, CalMag, Bio-Heaven, Acti Vera, (ALG-A-MIC gives you how to overdo it with conditioners ALG-A-MIC It saves the plant as you give too many nutrients. Find the best CalMag + iron (I do not remember from which manufacturer but it is great. And the girls will get their heads up 😁 💪🏻

Find a conditioner calmag + iron Most likely, there is mainly a lack of iron As you wish you can also insert a rusty nail into the soil as you lead in the depths. In hydrophonics I would recommend liquid.

If it's a calcium magnesium deficiency, the plants should recover quickly and continue to grow normally. The EC value of your water should not be below 0.3. If the EC value is low, you should raise it to 0.4 with calcium magnesium. However, you should know the minerals in your tap water; the minerals should mainly be calcium and magnesium in a ratio of 3 to 1. You can find the minerals in your tap water online.