Self-adhesive plant clips work quite well for me! :)
Of course!!!! I wish you luck! Personally I love hanging my plants up! They look really good up there and they're typically pretty happy there too!
This is a pulley that allows you to water your plant without having to unhook the hanger or take the pot out every time. We've got at least five in the house and it makes watering really easy! Hope it helps!
I use one of these as a satellite grow light. https://smile.amazon.com/dp/B07NN6SVG6/ref=cm_sw_r_cp_apa_i_rIJHFbG8Z40VW You should be able to find something comparable in the UK.
Was plenty of light for 1-2 orchids, whose leaves were blushing after some time under it. One of them might be enough to get your mango through winter, but might not be optimal during the growing season.
Rather than several of those, you might try one of the many different LED grow lights out there you can probably get for under 100£. Might be more expensive than just getting a couple generic lamps (maybe one with multiple bulbs?) and LED bulbs though.
It depends a lot on the plant in question... Most plants use a C3 photosynthesis pathway, leading to a lot of water loss in order to both capt CO2 and cool down the leaf temperature.
I don't really understand what you mean by properties, do you mean plant properties ? If you're talking about woody species, then xylem properties (cell wall, vessel/tracheid diameter, etc) are very important as xylem serves as support and sap flow. But surface leaf area is also very important as it influences the net biomass production and sap flow rate. For shade intolerant species I'd go for carbon allocation to the stem and heliotropism. For shade tolerant species I'd go for the leaf properties (structure, chlorophyll production).
It also depends if you're interested in plant growth per se or plant survival, plant productivity, plant competition. Is your plant in a natural environment ? In tropical ecosystem ? Boreal ?
But if you're interested in just very global informations, just go to the wikipedia page of 'Plant Development'. If you want a more in depth description, I suggest you read a book like this one https://www.amazon.com/Plant-Physiology-Fifth-Lincoln-Taiz/dp/0878938664 .