Wally.B
Active member
I like your plan.
2x 250w plus t5 is a lot of light on your tank.. More than you need, right now.. Imo..
I don't know- can you run your 250w bulbs on the 175w setting, or do you have 175w bulbs?
you might beat the cyano with the new lighting but if you use a cyano 'cleaner' watch the skimmer, my experience has always been days of crazy skimming.. I'm sure it is tank dependent, though.
I may try the ChemiClean, since I have the setup to do it (skimmer drain). But first will watch the lighting change improvement.
As far as running 250W bulb at lower power settings (ie 150W, 175W), I contacted Bulb manufacturer a while ago, and they gave me ok (in writing).
Here is the thread 250W MH bulbs on a 3ft 65Gal Tank? Can I run them at 150W setting?
That's the nice thing about my switchable ballast with current connectors,wiring and 250W bulb. (I can now pick and choose with a dial).
There is no such thing as a 175W bulb (common mainstream). But I can run my 250W bulb at 175W (temporarily), since 2x 150W might be too low for SPS.
My original lighting fixture was a 150W, but I modified (8 months ago) the connectors to handle 250W bulbs (thinking I needed them for SPS and Acros).
If 175W works for corals, I may keep it, since as you say with 2x T5 (ho) is plenty. Maybe even go back to 150W since that worked when I started this tank.
Here is proof that Lighting is driving the Cyano (even though no extra nutrients added- Coral Feeding, Additatives)
Two Photo's taken same day - TODAY (with new lower lighting setup).
First Photo is Morning after a night of darkness (Almost no Cyano)
Second Photo is Evening after Main Lighting cycle (Cyano coming back)
Cyano Cycle was worse before when I had higher lighting schedule. (Today is just first day with lower settings)
I plan on getting the PAR unit from Neptune systems. It's already out and I'm on waiting list with my supplier. To finally solve my lighting challenges. Not just of this tank, but my other Tank.
I believe I may be close to solving the Final Mystery with my tank. LIGHTING. (Bulb setting, fixture height, and schedule).
I looked at my skimmer today, and it's a couple of feet away from my SPS tank lights (getting way less light).
Loaded with Coraline. SO PERHAPS my lighting is too much and burning off my potential coralline and feeding my Cyano. (I hardly have coralline growing on glass or rocks, when chemistry is perfect).
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