Keeping sps

what kind of bulbs do you have? quality bulbs make a big difference.
If you remove the splash guard, use a fan to blow on the fixture (not the bulbs) it will also boost output. You can keep SPS under a Tek.
 
Giesemann, do yo have Actinic + or Pure Actinic bulbs? there is a big difference in PAR between the two. You would want Actinic +.
 

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