Backyard Aquaponics
A place to discuss aquaponics

Hi all friends
Sorry for my English
Melons grow.
But there are two problems.
you see Pictures.
Between the veins, yellow spots formed Is magnesium or potassium deficiency might be?
And the leaves were attacked by spider mites??
Each week, potassium carbonate, magnesium sulfate, calcium carbonate, and chelated iron added to the system.Is this correct?
Please help me.
Temperature: +40
Humidity is very low
System location: outdoors
Fish: Coi
Media: Gravels
Size: 50 x 40 cm growth bed

Welcome to the forum
Not sure what your problem is but curabits often show stuff like this. I would just prune off the effected leaves and maybe spray with a milk solution

I can't tell from the pictures, but do you see any webs? It looks like garden variety mildew to me. Like Mantis said, trim off the affected leaves. I know that with cucumber, I have to trim off quite a bit, then when it grows to a certain height, I don't have any problems with it.

HI Ronmaggi
Thanx for help.
I find it!!!!!!.By Digital Microscope.I see behind leaves by a digital microscope and find SpiderMites.
They are everywhere., But more on the vein.Like a small crab.
What is the solution?

I got better pictures

Nice Pics.

Mate taking a stab in the dark here, you will need to get an opinion from other members as to whether this recipe will hurt the fish or not. I found this on the net. You would need to treat 2-3 times to ensure you get them all.
Again NOT SURE IF THIS WILL HURT YOUR FISH???? but if you keep it limited to leaves only i cant see a problem.

Making the Calicleaner

1.) Get a sauce pan - fill with one pint of water - put on lowest flame possible (do not boil !!!).
2.) Chop 4 -5 Habanera peppers fine. Chop open seeds and central membranes, as the power lies there.
3.) Simmer chopped peppers for 20 minutes - making sure not to boil (you will destroy the active proteins).
4.) When you put your head over the pan and the wispy-steam stings your eyes, the Calicleaner is ready.
5.) Pour the Calicleaner through a fine mesh strainer - a little fine grit is OK - let cool in a clean bowl.
6.) Pour room temperature contents in a mister spray bottle. Your are ready to apply.

HOW TO APPLY Calicleaner
1.) Put on gloves, and wear a mask, or at least put a bandana around your nose and mouth.
2.) Turn off all fans - you do not want this spray in your eyes!!!
3.) Spray the bottom of EVERY leaf - starting with the bottom leaves first, work up to the top.
4.) After the bottoms are done, hit the tops and the stems.
5.) Squirt liberally in new leaf pods - tightly wound new leaf growth (the small mites hide there).
6.) Get the heck out of the room till it clears.
7.) Repeat procedure with each plant.
8.) Spray the soil, the pots, and the floor or earth around the area to kill dropping mites and stop migration.
9.) Wash hands with soap and water when complete - the stuff will heat-up skin for 4 hours.
10.) DO NOT WORRY. Though the stuff is lethal to mites, the plants love it.

That should not harm the fish. Also useful for kicking the curry up a notch

or get predator mites

Are predator mites available in Iran?

Hi Ronmaggi
Hi kitacooch
Thanx for help
Really thank you.This is a good way.
Yes, predator mites are available in my city.Red predatory mites,they moving fast every where, Easily seen with the eye.In the spring often seen.But many of them are very hard to find.Especially now that the weather is very hot and dry and I can't find it.
Three times a week, wash the leaves is effective?
Is spray the compost tea would work?

Predators are the way to go if you can get them as they will last all summer here.I will post a photo of them rounding up the spider mites.You will have to wait two or three weeks for them to breed up but the end result is quite dramatic.The orange ones are the predators.

And here is what it looks like when the prediters are nearly nearly finished their job,all the spider mites on the end of a leaf with nowhere to go.

Wow!

Cool

Woow.Nice pics