Is bottom feeding better than top feeding

Hi I am bottom feed my plants in 15 liter plastic pots in coco how much should I bottom feed my plants each time or should I feed from the top or should I feed some at bottom of pot and some at the top please let me know best way am in uk so we use litres not gallons thanks

Keep it simple, just top down water it. The only time I would consider bottom feeding is if I were using a ebb and flow table or nutrient film technique or perhaps a drain to waste system. None of which are ideal for coco, mostly best suited for rockwool.