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Thread: reservoir building up gunk

  1. #1

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    Default reservoir building up gunk

    need some help figuring out how to control the slimy growth in my reservoir. seems to accumulate on the re-circulation pump's filter. kinda looks and feels like a jelly fish, sorta harder maybe more like jello, and mostly clear / translucent. What is this stuff? algae? or bacteria? The water is clear and no real smell.


    reservoir specs:
    The reservoir in in a opaque plastic tote (very very little lite gets through). It is 10 gallons, kept at 68-70 deg F by a chiller. I have a air bubbler, and a re-circulation pump (for chiller), and the main sprayer pump all inside the tote. I also add in h2o2 at 3% 30ml every three days. I'm using gh flora nutes using the Lucas Formula:

    G-M-B (Grow-Micro-Bloom)
    0-5-10 - For Vegetative cycle (18/6)
    0-8-16 - For Flowering cycle (12/12)
    The numbers above indicate the number of milliliters (ml) of Flora Grow, Micro or Bloom formulas that I use in one gallon (US Liquid) of nutrients

    All the tubing is covered to keep out the light. The lights are two led 300 watt. oh yeah also have inline a 9watt uv sterilizer right b4 the chiller on the re-circ pump.

    did a bunch of searches but nothing seems to match what i am seeing. And from what ive read so far seems like I shouldn't have anything growing in the reservoir, let alone having it clog up the re-circ pump in about 2-3 days.

    Any ideas?

    thanks

  2. #2

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    oops forgot the water ph is at 5.5 to 5.8, using ph down to lower when needed, the ec is 1.72, orp at 242mV

  3. #3

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    I'm no expert but I know a bit about fooking up.Never used a chiller, but my dripper pump screwed my ph on first grow. Had gunk around pump, ph kept dropping. Something has to be causing gunk. If not light then heat.

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  5. #4

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    thanks tensing7 for the feedback

    I just don't know, it seems like every 2 to 3 days gunk builds up on the filter of the recirculation pump. I am adding 20 of H2O2 at 29% to the reservoir everyday.The water temp is 67-70 F, very little light is getting thru, but still 2-3 days there is the gunk! I'm starting to wonder is this is just normal for my setup.

    Anyway thanks again

  6. #5

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    sounds like you,ve got a light leak and your getting algae building up,

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