How close to 175W MH

[TIGER SHARK]

I know people keep Ricordia under 250's and 400's but how close would you keep them to a 175W XM bulb?

[Typhon]

Ricordia.. are very similar to mushrooms. They will adapt to medium or hight light. I would recommend putting them near the bottom first and then slowly movin them up until you see that they are happy. Ricordia are very hardy normally.

Good luck.