[Anton]

Welcome to the "Family" Kimberly.

Well there a couple of trains of thought about where to cut your Phals, and both are correct. I personally have cut one of mine to the base another I have cut down to about the 3rd node.

The Phal which I cut right back was because the stem had died right back, so there was no reason to leave it long. My present one a Phal Pulchra which looks different than the usual Phal has healthy stems, so I have left them relatively long.

By leaving them long quite often they will flower along the stem again.

With Phals, water them in the morning letting them dry out by night time, they don't like to be too wet over night. Again with fertilizing you will probably get several ways of doing it.

The way I do it is off flowering period as you mentioned around once a month weakly, with a full flush through about every third month to get rid of excess salt build up from the fertilizer. During flowering season weakly, weekly, and flush through about every third week.

Let the potting mix almost dry out between waterings, as mentioned, they don't like to be too wet.

Hope this gets you started, others will come on board and add their two petals worth.