I keep my flow steady throughout the day and night. I've read where some people lower the flow at night. Does anyone do this? What would the benefit be?
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that is more wind swell related than it is sub surface current and flow almost all of that shallow wind wave energy is used up in the top few feet of the water column.I slow mine down at night. I vacationed on the beach the waves seemed to be calmer at night. Thats the reason I do it. I doubt that it really makes a difference either way.
I’ve lived on the beach for my whole life, and currently live on oceanfront property. The ocean gets much much calmer at night. The waves turn to gentle rollers and the waves and currents by the surface are a lot slower. The wind dies down and they drives most wave and surface action we see on our oceans.What were the reasons people were lowering flow at night?
I would think to mimic the ocean it would stay the same since that flow probably doesn’t change at night.
I defiantly found all coral are different as to flow. I would not mind shutting off the powerheads at night but not during the day. I have discovered at least without reading it first that algae grows better with high flow and light. Since I now have a Diamond Goby I want to grow its food for it ( free )My understanding is that corals do not require as much flow over their tissues when they are not photosynthesizing, and as someone else said it lets the fish relax to lower the flow at night. That being said, I do reduce the flow from 40% reef crest to 15% lagoon on my MP40s at night. I do however have them both run at 80% short pulse mode for 5 minutes prior to lights on to help suspend any detritus that may have settled during the low flow night mode.
Bingo. Most lps shrink up at night so won't be terribly affected, and any sps will gladly feed in heavy flow at night (though not necessarily exclusively). I turn my nero pumps up for a portion of the night. Plus all the fish are stationary or tucked away (having a clown, gramma, goby etc, they love wedging into rock structure or corals).Some actually turn them up at night, the thinking being the corals are all tucked away at night so turning up the flow would help with detritus removal.
arent there usually 2 high tides a day and 2 low tides?theoretically it mimics a diurnal tidal system with one high and one low tide a day so there is a programmed flow and slack during the day your mimic a "natural" tide cycle of flood ,slack, ebb, slack, flood, etc...
the java sea and Gulf of Mexico being two large areas with Diurnal tides versus the semi diurnal or mixed diurnal tides of most coastal regions.