you could flush with tap water the higher PH will rid of some of your PH soil, you seem to have quite a few plants but a method i use is to fill your tub until the water is at the pots edge and leave them in this about 20-30 min to soak up the water, then let them drain and the water should be yellowish which is the salts that cause PH lockout.

then i give them the usual watering and 1/4 nutes and let them fully dry out before i do anything further.