I don't know about the mango.

For the lemon,
each time you have to water, add FP to the water
and use that instead of just water. Use 1 1/2 teaspoon
Foliage Pro 9-3-6
/gal of water. Get a
cheap pH testing kit - the kind used to test the pH of swimming pool or
aquarium water. If your tap water is above pH 6.5, add enough vinegar to adjust
it to about pH 6.5. You will only have to add give or take 1 Tb/gal. So, you
will be watering with a mix of vinegar and Foliage Pro every time the tree
needs water.

Resume fertilizing two weeks after the repotting.

Follow the directions on the label if you're concerned. However, as Vlad mentioned, the Meyer will appreciate the stronger dose.

Josh

Thank you so much for the info gentlemen. I've also read about Fish Emulsion. Is this something that I should include in my fertilizing regimen? Should they be staggered? Is it good for both of these trees? Thanks in advance.

My understanding from reading Al (tapla)'s posts is that FP is a complete fertilizer that needs no supplementation. He also explains that fish emulsion and other organic fertilizers requires breakdown by microbes in order for the nutrients to become available. Since these microbe populations are so variable in containers, it's an unreliable and imprecise way to fertilize. Liquid ferts give you much greater control and awareness of what nutrients are being delivered to your plants. :)