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Thread: SURF4 Journey

  1. #1

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    SURF4 Journey

    Well I purchased the Surf4 back in Mid January so its been running for a couple of months now. It took a good month to start getting some decent growth but now I am really starting to see growth accelerate. I am attaching a pic of what I pulled out of it yesterday. My question is, when will I start seeing reduction in nitrates? Currently my tank is sitting between 30-40 ppm and my phospate is good at 0.05.
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  2. #2
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    Nice to hear.

    Depends on how many nutrients are in the rock, and how many other filters you have, and least important, how many gallons there are.

  3. #3

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    Don't know about the nutrients but I do run a skimmer, GFO and sulfur denitrator. The tank is 240g with a 80g sump.

  4. #4
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    How much rock, and what was the state of the rocks for the last year or two.

  5. #5

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    85% of my rock is 10 years old (18 months in my system) and the rest of it is about 2 years old. The "newer" rock is BRS puckani rock which leached phosphate heavily but most of that leaching is now gone. I did used to have hair algae on those rocks but none anymore, whatever was left of it my tangs ate it. Most of my tank is algae free execpt for a little green slime algae on the sand and a bit on one rock and some on the return PVC.

  6. #6
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    How much are you feeding, and what about water changes?

  7. #7

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    Have an autofeeder that feeds 3 pinches 3 times a day and I also manually feed live worms and 1 1/2 cubes of frozen food daily. I usually do a 60 gallon water change about every 3-4 weeks.

  8. #8
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    As a guess, each handful of growth you harvest is probably a few ppm of nitrate.

  9. #9

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    So in order to reduce nitrate, harvesting must out-compete nitrate production correct? Will that even be possible?

  10. #10
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    Yes that's the case with every tank. Otherwise it builds up.

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