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Looks good... is there hair algae on the rocks?? If so, shutting the lights off for a couple weeks would help. Now is the time to deal with it sense the tank is still cycling.

I didn't see your last post but I can respect this one!! Welcome back...

Xenia are REALLY poor shippers… if you ordered them online or if the LFS had just got them in, they could have been in poor health before you even added them to your tank. That said, what lighting do you have and how much water flow do they have??

You can get retro kits that are more plug and play than an electrical installation... meaning the ballasts are already housed in a enclosure and wired up. The cord that comes out of the ballast box plugs into another cord coming from the light socket or pendant enclosure. Do a search for PFO...

Because they can not move around... they rely on water flow to bring them what they need to live.

I live west of rock springs in evanston. lots of work around here right now...

Originally Posted by Bang Guy We'll have to disagree on this. ok fine... I have not done my own experiments so I’m basing my comments strictly on researching the subject. I remember your black light experiment... do you have threads on the others you have done??

We will all agree that photosynthesis takes place in the “spectrum ranges from roughly 400 to 700 nm”. What is at question is IF different spectrum (or color temp) of bulbs make a difference.

I think there are other reasons to go with a higher spectrum of bulb... but the PAR output (intensity) is more important than the actual spectrum of the bulb... IMO.

There are two different thoughts flowing here... spectrum of bulbs and the actual spectral wavelengths of photosynthesis. My point is the 4000k MH and 12000k MH provided the same amount of “usable light” (light between 400 and 700nm). In addition corals are adaptive and will adjust to maximize...

yes you can... much better than tap water IMO.

I’d have to agree with Bang Guy. There is research on the web in direct relation to photosynthesis of zooxanthellae that indicate the photosynthesis rate under a 4000k MH and a 12000k MH are essentially the same. I’d post a link if I could… Corals are very adaptable to different spectrums of...

That's a pretty deep tank... you will need the more light demanding corals in the upper part of the tank. Again a lot of medium light corals will do very well in high light areas... start them at the bottom when you first get them (to get them used to the MHs) and move them up the rock work...

Yes... they will feed on food and waste particles and help keep the tank clean.

Don't feel bad... most hobbyists come around. I would just stop using the tap water and keep your normal water change schedule.

Some type of tube worm...

There are four types of fluorescents we see in the hobby... NO Fluorescents (Normal Output - useless for a reef), VHO Fluorescent (Very High Output), PC Fluorescents (Power Compacts) and HO T5 Fluorescents (High Output). Out of the 4 the HO T5s are the strongest. Not ALL corals can thrive...

The type of light makes a HUGE difference. What type of fluorescents are you referring to?? What size is your tank and what do you plan to keep??

What wattage are your MHs and how deep is your tank? Coral placement is very important but many "medium" light corals will thrive in a high light area...

yep... Q-tip sponge