4ft freshwater tank in progess

Discussion in 'The Planted Tank' started by steve wright, Nov 6, 2010.

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  1. steve wright

    steve wright Super Moderator Staff Member

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    T5 lighting on freshwater planted tanks

    Im using my canopy from my old 4ft reef which currently has
    4 x 10k AND 2 x 22K lamps in it

    the tank looks ok aesthetically to me
    want to grow easyish plants like Vallis, Cabomba, Amazon Swords etc

    would the current lighting suffice
    or is it completely the wrong mix of colour spectrum for freshwater plants

    Steve
     
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  3. sostoudt

    sostoudt Giant Squid

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    it will work fine, one thing I noticed when raising plants with reef lighting is some plants turn extraordinarily green even with out carbon supplementation.
     
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  4. steve wright

    steve wright Super Moderator Staff Member

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    Thats good news sostoudt
    Im not intending to go CO2 etc, hence wanting to purchase only known hardy plants

    Steve
     
  5. 2in10

    2in10 Super Moderator Staff Member

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    I don't think the plants will get as much use out of the 22K bulbs. I would use 5100K to 14000K bulbs in a freshwater planted tank. Most ornamental plants only grow in the top 6 foot or less in freshwater so you do not have the wave length absorption light in saltwater due to depth and water hardness.

    I have used 6500K and 10000K bulbs on my planted tank and the plants have done very well. I think a mix on the bulb spectra is a good idea.
     
  6. steve wright

    steve wright Super Moderator Staff Member

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    thanks 2 in 10
    I do have access to some 8500K lamps out here, and also some Hagen growlights which are a red/ purple colour and remind me of the Grolux tubes I had many years ago in UK

    Steve
     
  7. 2in10

    2in10 Super Moderator Staff Member

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    I would use those as supplemental lighting especially if you are going to keep red colored plants. If the 8500K is white then I would mix it in with the 10000K. If it is red then treat it as a supplemental light.

    I intend to change over to T5HO on my planted tank from PC this winter. I am going to use a mix of bulbs including one with some red in it. I only intend to use 4 tubes as I use Seachem Excel for my CO2. I will be reducing my wattage from 260 to 216 with this change. Wish I new what the PAR change will be.
     
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  9. 2in10

    2in10 Super Moderator Staff Member

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    If those are T5HO you will want to use less tubes or you will need to supplement with CO2 and quite possibly heavily.
     
  10. steve wright

    steve wright Super Moderator Staff Member

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    thanks again John

    I could use just 4 lamps even though its a 6 lamp canopy, as it has 3 sets of switches
    will Seachem Excel provide CO2 in adequate amount should I stick with 6 lamps?

    I dont want to be messing with CO2 tanks and bubble counters etc

    Steve
     
  11. 2in10

    2in10 Super Moderator Staff Member

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    It should since it is safe to 3 or 4 times the recommended dose. You might need to use more than recommended.

    It also works well on killing black beard algae at the higher concentration.
     
  12. steve wright

    steve wright Super Moderator Staff Member

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    thanks John

    they named an algae after a pirate?
    surely that should be in a saltwater set up?

    Steve