Not much to say about this week. The plant is doing well with LST and I’ve now started using a TDS meter to measure my PPM. The PPM I measured was based on the runoff and since i’m using Ocean Forest, i’m not surprised about the number. I did test it last week just for kicks and it was about 3000 ppm. I’m pretty sure in the next few days it’ll be time to start adding nutrients.
Those crispy top leaves are from overfeeding the plants. Since you're using FFOF soil (which is extremely hot) you should be waiting until week 6 or possibly the start of week 7 to feed your autoflower ANY nutrients. FFOF soil has enough nutrients to "carry" plants into week 6 or 7. I've learned through trial and error the same mistake you made. And I did it multiple times. By the end of my auto grow, some of my girls were so fried from overfertilizing that there were basically zero fan leaves left on some of them. If you're growing photoperiod plants it's a different story. You don't have to worry anywhere near as much about overfeeding those.
I actually just started to do what I told you with my autos and not feed until week 6 or 7. I have a Fast Buds Strawberry Pie in FFOF soil thats on day 38 that I've given nothing but water, and there is not one sign of any kind of deficiency. I'll keep you posted with how she ends up
@JasonMichael420, thanks for the advice! However the dead leaves were due to a ph imbalance as well as a nitrogen deficiency. Once the ph was balanced and i fixed nutrient lockout, the leaves stopped dying. I just hadn’t trimmed all of them off.