DWC PK booster suggestions?

I was curious to know if anyone knows of or has any experience using pk boosters for hydro? I'm growing dwc and noticed my plants demands are increasing. I may need to add a supplement for P and K just not sure which is good for hydroponics. Thanks in advance for the help!

Just increase your regular bloom nutrients if you are using a 2 part system...

I've been rocking with GH Maxi Gro / Maxi Bloom and CaliMAGic for this grow. I appreciate the advice!

GardenOfZorahn said:

I've been rocking with GH Maxi Gro / Maxi Bloom and CaliMAGic for this grow. I appreciate the advice!

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none needed with maxibloom. 5-15-14 has plenty of P and K.

Koolbloom. I only use it because my Sour D's don't like hardly any N. If I back off the FNB to not give them too much N then they get light on the P K. I guess that's why they make the Koolbloom.