Phal to SH: Stopped Growing??

[schwing]

I bought a doritaenopsis a few years ago, had it for the first year and it didn't grow a minimeter the whole year. I took it out of the bark and put it in SH and it took off like a shot! It grew 3 new leaves and at least that many new roots during the next year.

Now it's been about 3 months and the plant is back to not growing at all. I haven't moved it at all and the only thing I did different is that I started adding a tiny bit of fertilizer to the jug of water I use. It was just a 20-20-20 fertilizer and I maybe added a 1/4 tsp to the gallon of water.

This might just be normal phal growing activity, I don't know, but it was doing so good and now it's not so I thought I would ask. Heck, maybe it's just "winding up" for another growth spurt!

Thanks for any thoughts.
-ken

P.S. It's Dtps. Siam Treasure, if anyone's interested.