new spike coming on phal - feeding question

[Kailyn]

Hi all
one of my NoID phals has a spike just starting to form. I am wondering if I should carry on watering it w my normal routine or should I find a lower nitrogen feed etc. Right now it get very dilute amounts of liquid all purpose orchid food 15-5-5 and a seaweed supplement pretty much every time I water. I flush them ever month or so at the sink. It has had amazing root growth and is also forming a new leaf and shedding an old one. It lives on a pebble tray on a seedling heat mat (my place is quite cool in winter).