Sickly Cucumber leaves

[sheansmith]

My bush cukes are developing ugliness on it’s leaves. I’m including some pictures of my cucumber challenge. With my hat in my hand I’m requesting someone with greater knowledge than me to shed some light on this blight (it had to rhyme). I have baking soda and API “Leaf Zone” to mix up. I’ve already tried MaxiCrop; it’s been two days since I applied it. I also reapplied it this morning (4/26/12). Help anyone?

[benwalters]

Hi shean,
do you know what ph you have?
How are other plants looking?
It looks a bit like a chemistry issue rather than a pest /disease
I haven't had much luck with cucurbits in ap myself
if the top of plant is growing well you may not have much of a problem
ideally you shouldn't use much maxicrop, let the fish do the work , is your system stocked and cycled ?
Alll the best
bw

[sheansmith]

Hi, thanks for your help. The Ph is holding at about 6.4. I check the water daily since my system is fairly new. The other plants are looking good. The tops of the cukes are looking healthy.; it’s mostly the big leaves that look bad. I noticed today that the the blooms are having a little problem now. Yes, the system is stocked and cycled.