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Excesssive Pearling?

Discussion in 'Are you new to aquatic plants? Start here' started by Frank Lawler, May 18, 2011.

  1. Frank Lawler

    Frank Lawler Subscriber

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    My plants are all growing well with N,P,K and traces fertilization, as well as pressurized C02, but recently there has been a sudden increase in both brown algae and pearling. The Parrot's Feather in particular is covered in bubbles, and to a lesser degree the Wisteria as well. On the later, much of the pearling seems to come from the beginings of algae growth along leaf edges.
    It seems odd that I should be battling algae in a heavily planted tank with good growth.
    Might there be a connection between this problem and such extreme pearling? Thanks.
     
  2. chopsticks

    chopsticks Prolific Poster

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    Too much light maybe?
     
  3. Frank Lawler

    Frank Lawler Subscriber

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    Well, it is the same amount I've had for several months: 55 watt @ 8hr/day over 29 gal, although I did put in a new bulb last week.
     
  4. dutchy

    dutchy Plant Guru Team
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    Changing a bulb can make quite a difference in PAR. I've measured differences up to 30%. Maybe because of the increase in light there's a CO2 deficiency, hence the development of algae.
     
  5. ibanezfrelon

    ibanezfrelon Guru Class Expert

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    Maybe it's cyano pearling.. it can be brownish.
    Can you post a photo?
     
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