all i can do is guess ... when i buy fall mums.. i buy them.. in my MI around now.. and i buy plants with one single flower open ... so they will bloom thru october or so.. with the cooling weather ... I SUSPECT ... you bought them in full flower .. too early ... so they have blown their wad ... and are in decline ... soooo.. next year.. buy later ... you might be able to 'deadhead' them [thats the key word] ... and get another bloom off them before the season ends ... since you are in a warmer zone than i am ... without a pic.. its hard to tell you how to do that.. so all i can offer .. is the link .. soo... in summation your honor ... buy later for fall plants.. buy plants that are just beginning to bloom rather than at their peak ... and deadhead them .... one way of restating that.. is that you bought a plant for instant gratification ... whereas i would buy one for delayed gratification ... also .. transplanting in august.. can be a big stress.. as compared to transplanting now.. in sept ... that stress may have also had an impact.. never forget.. just because you buy it.. does not mean thats the best time to plant it .... ken https://www.google.com/search?q=deadheading+mums&ie=utf-8&oe=utf-8

New growth isn't a clear indication that the plant is growing. True growth is measured by a plant's increase in dry weight; so, if a plant is shedding a leaf and growing a leaf, it's roughly in a static state, which is not a good place for a plant to be. I'm not necessarily saying the leaf ISN'T being shed as a result of normal senescence, only that new growth might not indicate an o/a increase in mass. There is no better fertilizer program than one you can control to the degree you know exactly what nutrients your plant is getting, how much of each, and when nutrients will be available for uptake. There is an ideal level of nutrients in the soil and an ideal fractional amount of each in comparison to each and all of the others. Most plants use about 10X as much N as P, and about 3/5 as much K as N. The rest of the nutrients also have an ideal level determined by a function of N levels and the overall level of total dissolved solids (TDS) in the soil solution. Adding tonics, miracle concoctions, or supplements targeting an increase in 1 or 2 nutrients w/o good reason or a strong likelihood what you are doing is going to correct a deficiency, is far more likely to result in limitations than benefits. Al

Thanks for your reply. I've even clipped the vines into an upwards position onto the hanging tripod stems and they still yellow and die back. When the vines get too long and unmanagable, I wrap the vines around the outside of the plant and secure them with plastic hair claw pinchers (the Dollar Store) that are loose and not tight in an untaught upward position. I've tried increasing misting, decreasing misting, changed to dif types of foliar feeding including fish emulsion. At this point I'm just not going to dwell on it and accept it as a quirk of the indiv plant. Otherwise, I'll make myself crazier. Thanks again for your reply. Krisi

It sounds like the fuel line between the tank and filter is partially clogged, either the line itself or by debris in the tank.