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  1. J

    drilling a new closed loop???

    how do i bring his attention to my thread?
  2. J

    drilling a new closed loop???

    I installed a closed loop a few months back on my established tank. Had to drill closed loop holes on the sides of tank. I was not able to drain it completely and move it to access the back. The tank is 125 gal., 4x2x2. Have two outputs on right wall, one on left, another feeding a 3/4"...
  3. J

    Day flow vs. Night Flow

    The main reason for the seas to be a bit calmer at night is mostly due to wind. The sun powers the wind, which blows across the water, creating its waves and its own current. This is why at night, the surface water seems to be calmer due to less wind. But beneath the waves, the worlds currents...
  4. J

    Suction from closed loop

    tomz what a great idea! But thought more about the flow in my tank and decided to just close of the original bulkheads and drill two new 1.5" inputs. Got these large diameter screen to cover the opening. So should have next to no suction to grab my little ones. Used a 2.5" hole saw bit, and...
  5. J

    Vacuuming sand bed

    To my knowledge a UV sterilizer won't due anything for the nitrates, just ease the problem it is creating. Just emptied most of the water in my tank, removed all the rock, and found soooo much detrious!!! Stirred the top inch of sand and then vacummed it up. I am re-arranging the rock to more...
  6. J

    Vacuuming sand bed

    Someone suggested to me that since I plan on keeping mostly sps, that my sand bed would be better if it was only .5-1" deep, compared to the 2-3" depth it is now. I would like to have a few softies though, but not sure if that is enough of a reason to keep the sand so deep.
  7. J

    Vacuuming sand bed

    Tested some water between two rocks, put a small crater in sand bed, and got as close as possible to sand to obtain sample also. Both results are higher than 10ppm, but not fully 20ppm. So it seems my rock and sand are the sources of my problem. So would you suggest taking most of the rock out...
  8. J

    Suction from closed loop

    Well I am taking the time today to re-drill the holes. Going to be a feat, will keep you all posted on the progress. I have the ampmaster shut down now, hoping to save any further damage.
  9. J

    Suction from closed loop

    So even dialing down the output won't help to reduce the strain at all? Will try and get things rolling tomorrow, since this issue is quite serious!
  10. J

    Vacuuming sand bed

    My fuge was just 3-4 gal, had low flow through it. Had just 15 watts lighting it(probably too little). Sand was carribean reef sand I think. Came in 25lb bag at LFS. Was superfine, like fine sugar, had kind of pink color to it. Didn't like it too much. Only had sand a some calurpa in my fuge...
  11. J

    Suction from closed loop

    Would like to enlarge the current holes rather than drill more, and have two unused bulkheads looking, well, silly. The inlet holes are on the sides of my tank which is 48x24 so there is no bow. Will try a board pressed against the inside to guide my pilot bit, take it slow, and go from there...
  12. J

    Vacuuming sand bed

    Should I only be vacuuming the top inch or so of the sand, or go all the way to the bottom? I am currently sticking the vacuum near the bottom, letting it sit for a second or two, and then moving.
  13. J

    Suction from closed loop

    I was thinking about the same process, but the bulkheads are about 10" below top of tank, so no real way to clamp wood together, of even a piece on the inside. I have a central overflow so maybe could put a piece of wood over hole, use pvc pipe to wedge against board and overflow to hold in...
  14. J

    Vacuuming sand bed

    Had a refugium a little while ago, but became plagued with algae, more so than it should have. So removed it. Is the only way to remove nitrates through water changes or refugiums?
  15. J

    Suction from closed loop

    Hope I won't burn out the pump. Thought ampmaster was ok to throttle back. I would like to just enlarge the to holes I currently have. Much more of a pain the drill more holes, change plumbing, etc. Any ideas of how to enlarge the hole without ruining the tank surface? I have tried that on a...
  16. J

    Vacuuming sand bed

    I have a 125 gal tank. Been up for about a year now. Problem is, can't get rid my nitrates. Been around 10ppm and even with water changes, no drop. After talking with my LFS, believe my problem arises in my sand bed(2-3"). I have never vacuumed it...ever. Some of the sand is from previous tanks...
  17. J

    Suction from closed loop

    I installed a closed loop into my system to rid myself of powerheads. I am running an Ampmaster 3000 through six 3/4" bulkheads, two inlets, four outputs. All the plumbing is done in 1.5" PVC, just the bulkheads are 3/4". I have overflow strainers on each inlet, but the suction is pretty strong...
  18. J

    Closed loop trouble

    I think I have decided to put the pumps below, using 1" for the inputs. With the 3-4 foot drop should allow plenty of flow in. Going to use flexible tubing from the pump and out of the stand, then switched to hard pvc to the bulkheads. So for the outputs at the back, where do you recommend they...
  19. J

    Closed loop trouble

    I was thinking of putting the pumps themselves underneath the aquarium. I have heard that when you draw water from the tank itself, that I cancels out the head pressure the pump has to overcome pumping it back up due to gravity's help. Is this true? Maybe just put them under tank rather than...
  20. J

    Closed loop trouble

    I am having trouble with my new closed loops. I have one on either side of my 125 gal. reef tank. Left side uses a mag 12, right uses mag 18. Problem is, both pumps makes alot of noise. I ran the pumps alone in a bucket and were completely silent. But unless I close off my valves almost all the...
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