Thread: Why aren't my GSP's opening?
09-22-2013, 04:35 PM #1
Why aren't my GSP's opening?
For the last 3 or 4 days, my GSP's have remained closed.
My lights are ReefBreeder Value LED 120w. Whites and Blues kept around 40%. Blues run 10am-10pm. Whites run 12pm-8:30pm. I figured this wasn't the issue because they have been set like this for over a month now with no issues. The lights are about 9" above the water surface.
The GSP's are in moderate flow.
Pic from last week:
Pic from today:
FTS to show water flow (I ran out of water for my water change so the water level is low. It is usually kept half way up the trim):
Full setup shot to show light position:
Any help or tips are appreciated.
09-22-2013, 05:02 PM #2
They can get grumpy and close up for a day or two, but typically not that long
What's your salinity and alkalinity levels at right now?
IME, they don't do well in lower salinity and/or lower alkalinity levels.
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09-22-2013, 05:10 PM #3
Different sections of mine (I had a good mat going on several parts of the substrate, glass, and rock) would shut down for a day or two all the time. They may be irritated by heavier shrimp/crabs if you have them, or be annoyed by a change in flow. Or they may just need some shut down time.
For something to try, you could shut off the lights completely for a couple days, and see if they don't open up the same day you turn them back on. No light doesn't hurt anything and some folks think its beneficial.
09-22-2013, 05:18 PM #4
I dont know my AK or MG. I don't have the test kits.
My SG is kept at 1.025. I top off nearly daily to avoid swings.
I may try the light thing tomorrow to see if that helps.
09-22-2013, 05:23 PM #5
I know mine are really sensitive to salinity as Cliff said. If the reading gets 1.024 they close up in protest until I get it back to 1.026. They are also very picky with flow. When my power-heads get too much gunk on their housings it cuts down the amount of flow going over them. I clean the housings and they usually respond fairly quick.Warning; Bulldog Pleco guarding my Sons tank now..
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09-22-2013, 05:35 PM #6
I am pretty consistent with my SG. I will definitely pay closer attention to it in case I'm not as good as I think I am.
My powerheads are pretty dirty to be honest. The one on the left was full of Pineapple Sponges. What is a good way to clean them out without killing the Coralline on them? The last time I tried cleaning them, I shook them back and forth. It made a huge mess in my tank haha.
09-22-2013, 05:45 PM #7
Is there a reason you want coraline on your powerheads? Thats the one thing I tried to keep coraline OFF of...I take the powerhead out of the tank, scrape the coraline into the water so it would spread elsewhere, then take the powerhead to the sink and scrub it clean. Cliff also posted a great idea in another thread about running them in a container of vinegar water for a bit - works great.