Seachem does make macro solutions but they are sold as a singular mixture. I.E. Flourish Nitrogen, Flourish Potassium, etc. You are probably using a trace mixture which is indeed important but it doesn't cover all the bases. The problem with with using commericially made ferts is that they are expensive, especially if you have a large tank. You can obtain dry ferts from Rex or Greg Watson. They are cheap and should last you a long time.
In the meantime I'd suggest frequent water changes. Tap water has some of these nutrients already in it and it may get you by until you can get your ferts.