It looks to me that perhaps you don't have enough light!

they are stretched and spindly...get your light as close as possible without burning them...put fan blowing between them and canopy...goodluck

I tried to buy your unit off ebay a while back...It is an ebb and flow system...although drippers are great,imho
ebb and flow is ...SSOOO, simple...and easy to dial in.

I run my drippers full-on during thr light photoperiod and 15 min. on 1 hour off during lights-out...hope this helps

drippers come in many shapes and sizes...I just use simple 1/4" 90's instead of designed drippers.