Algae control guide

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31 Mar 2019
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Location
Serbia
ALGAE CONTROL GUIDE

*Green Water Algae*
(turns the water into cloudy green color)

Common causes:
  • Ammonia (uncycled new tank, over feeding, fish plant decomposition) with high light level for extended periods
Solution:
  • Lover light level plus reduce photo-period to 5 hours per day
  • Mild cases can be cured by over-dosing Excel (which can hurt both livestock and plants) BE CAREFUL!
  • Using Purigen as last step of filtration
  • 4-5 days blackout
  • Diatom filter
  • UV sterilizer is 100% cure for serious cases
  • Minimum 50% water change per week, more it’s better
*Hair Algae*

Common causes:
  • Unhealthy or stressed plants (sub-optional CO2, overcrowding fishes, over pruning)
  • Abundance of unhealthy plants
  • Build up of organic waste/ammonia (clogged filters, incomplete cycled tank, over feeding)
Solution:
  • Lover light level plus reduce photo-period to 5 hours per day
  • Mild cases can be cured by over-dosing Excel (which can hurt both livestock and plants) BE CAREFUL!
  • Using Purigen as last step of the filtration
  • Minimum 50% water change per week, more is better

*Green Dust Algae*
(green film most noticeably on the glass)

Common causes:
  • Biologically immature tank, newly set up tank
  • Lack of dominant plant mass in the tank
  • High light coupled with heavy water fertilization
Solution:
  • Build up plant mass in the tank to 70+%
  • 3-5 days blackout
  • Reduce dosing of fertilizers
  • Minimum 50% water change per week

*Green Spot Algae*
(distinct circular dots that are very hard to scape off)

Common causes:
  • If this is the only algae that you have in your tank and you are not dosing phosphates at all, it may indicate insufficient phosphates
  • Unhealthy plants, damaged leaves
  • High organic waste levels (if present on hardscape rather than on plants)
Solution:
  • Prune off dead growth and replant new tips
  • Be sure that plants are in good health condition
  • Clear organic waste from the tank
  • Minimum 50% water change per week

*Cladophora*
(distinctive smell)

Common causes:
  • Slow flow
  • Slow plants growing
  • Decaying undergrowth
Solution:
  • Manually remove, spot treat with H2O2 or with Excel
  • Prune/remove unhealthy plants
  • Increase growth rates by optimizing CO2, nutrients level
  • Increase flow
  • Minimum 50% water change per week

*Black Brush Algae*
(black brush/beard, commonly found on filter outflows and plant leaves)

Common causes:
  • Fluctuating CO2 levels in the tank
  • High organic/dirty tank with high light
Solution:
  • Stabilize CO2 level
  • Make water flow more even
  • Clean filters, improve filtration
  • Spot dose H2O2 or Excel directly on BBA at first appearance to prevent spreading
  • Remove affected plants and replant new healthy plants
  • Minimum 50% water change per week
 
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