Backyard Aquaponics
A place to discuss aquaponics

Hi there im growing gravel bed aquaponics syatem.
My water parameter is ph 6.9 .i have a little greenhouse where the ap setup is in. It getsbreally hot in here in indonesia. about 38-40 degrees.

I gave a afew of my friends some caixim to eat and theyre concern about these "freckles" on the leaves.
Is this a disease? Mysuspect is the weather. It geta too hot. Im thinking off outting a shadenet.

Thank you all.

What does the bottom of the leaf look like? Are there any webs on the plants? It almost looks like spidermite damage to me.

I think it could be spider mites also. Hard to tell from the photo but on the left side of the image there are three brown critters that could be spider mites. Mostly you'll see them on the underside of the leaf though. Usually they thrive in higher temps around 80 and above so if this fits your conditions I'd say it's pretty likely that's what's going on.

Sometimes it helps to put a piece of white paper under the leaf and give it a shake. The mites that fall off are easier to see against the white background.

Hey all.
my worst nightmare just hits me.
indeed they're red spider mites! yikes. how can effectively get rid of them? how do I prevent them other than using natural predators like ladybugs.
I have a few more grow beds that I'm beginning to grow some vegetables. does it help if I spray the grow beds with mild organic pesticide like soap and chilli water?

I have used essential oils like peppermint, thyme, oregano, cinnamon, clove and others with good results. I haven't actually tried the pepper and garlic spray on spidermites but I hear it works well.
Good luck

i've unplugged the affected ones. and i 'm currently using neem ol to combat these pests.. still there. but not as much. dont know if it helps.. but i think its better.. thankyou

With neem you'll probably need to spray every 3rd day for a couple weeks to get rid of most of them. Look for eggs along the undersides of the leaves along the veins. I try to remove any damaged material or leaves with lots of eggs as much as possible. Also be sure to spray along the stem of the plant, where the leaves attach. I've used a vacuum cleaner to remove webs but you'll want to be carefull not to damage the leaves. Definitely clean up any overspray asap because neem will build up a sticky residue that is a pain to scrub off if allowed to dry.
Be vigilant and when you think you've got them whipped, keep spraying for another week or so to be sure.
Glad to help.

I've never been a big fan of spraying especially around the fish so I have a different strategy. When I see spider mites usually they are on bush beans and usually the beans have matured and are on the decline. If the infestation is really bad I'll just pull and get rid of the plants. If it's not, I will try to extend the crop maybe a week or two usually just by spraying with water (especially on the underside of the leaves) to knock them off but when they get too bad, I yank the plant and discard it. After a week or so I'll start another crop. Generally I get more beans than I want and my weather is cooler than for many (which slows them up) so this works for me.