Lighting causing algae?

Discussion in 'Nuisance Algae' started by trad, 6 Apr 2009.

  1. trad

    trad Fish, thats the word!

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    Hey guys

    How much will old lights affect algae growth. This is my reasoning, if phos is zero even if you have really bad lights the algae shouldn't be able to grow.

    2 AM T5s 20000K over 18 months old.
    Chaeto in Sump growing strong
    Phosban reactor with rowaphos
    and just replaced the carbon and microfilter on my waterboy (not the top one 7 months old), could really comment of the affects yet only topped up once since replacing these filters.

    Still got slight hair algae growing in high flow areas


    Got 5 large turbo snails and they seem to be doing a good job, I have no fish or corals, and no gravel just trying to get the algae 100% before i introduce new things. Is that possible.

    Will certian coral use some phos??
     
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  3. Warr7207

    Warr7207

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    Well, the Chaeto growing strong indicates PO4 and nitrates are present.

    Old lights can have a lower spectrum which plants love
     
  4. riyadhessa

    riyadhessa

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    Warr thnks for that i never new that
     
  5. OP
    trad

    trad Fish, thats the word!

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    Well I dont have much living in the tank and the Nitrate are undetectable could be phos but I agree the faster growing chaeto is a sign of phos. So really old lights could be the culprit. I'll swop the two new tubes to one fitting and leave the one fitting empty for now and see if it slows down.

    do certian types of coral prefer/use phos??
     
  6. viper357

    viper357 Admin MASA Contributor

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    How long has your tank been running trad?

    No, there are no corals that consume phosphates, running rowaphos is your best bet, but you need to replace it every 2 or 3 months.

    Lighting, either new or old does not "cause" algae to grow, instead it kind of accelerates the growth of the algae. If you are having nuisance algae problems then you have an excess of nutrients in the system. Have you taken a nitrate reading?
     
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