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post #1 of 3 (permalink) Old 08-28-2005, 11:08 PM Thread Starter
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Question marine planted tank

Hi,

I have been looking through past threads and see only freshwater info. I was wondering if anybody has any experience with a marine planted tank. I'm new to macroalgae. I want to make a saltwater version of your freshwater planted tanks. I have no clue on what I need to succeed in doing so (supplements, CO2 injections, lighting) I have a 150 gallon saltwater aquarium that I would like to make into a marine planted tank. I will be using 2x160 watt vho 12,000k full-spectrum. I am thinking about adding 2 more bulbs (so 4x160 watts), but not sure. I would also like to know if macro algae will harm fish (depletes oxygen and toxins released when cut). Any info is greatly appreciated.
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post #2 of 3 (permalink) Old 08-28-2005, 11:18 PM
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See Reefcentral under macro algae and marine plants.

There are a few folks taking marine planted tanks seriously these days.
Marine plants/macro algae add O2, not remove it and there are no real toxic issues with macro algae, eg Caulerpene would be the only one I'm aware of and folks have kept it(Caulpera) for many years with fish without issue.

CO2 has not shown IME to be of much use. Good aeration/flow has.
I dose KNO3 and Traces, Ca and alaknainty are very important as is stable temps.

PO4 can be dosed at lower levels than FW tanks(add about 0.1-o.2ppm at a time-2-3x a week), and carefully, diatom blooms will result if over dosed.

Note, this is for a very dense planting.

Regards,
Tom Barr

www.BarrReport.com



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post #3 of 3 (permalink) Old 08-29-2005, 04:06 AM
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Calcium, Magnesium, and a stable alkalinity are all VERY important when keeping macroalgaes and certain types of seagrasses. No need to dose nitrates if you have a reasonable bio-load. There are types of macros that only need calcium, high light, and good water movement to proliferate (halimeda sp. being one of them). You might also want to look at seahorse specific forums to glean as much info as you can from them. Seahorses and marine plants go hand in hand!

Also, you might want to look at creating a biotope using only turtle grass (legally collected of course). There are great number of species that live in turtle grass beds that rival some of the reef species in beauty and oddness!

Many people already have planted marine tanks. They are called refugiums. Generally they house specific types of fast growing macroalgaes like chaetomorpha sp. to suck up nitrates and phosphates that would damage the corals in the main display. And yes, caulerpa do go "sexual" ( they release gametes into the water column) when conditions are not to their liking. Caulerpa need to be pruned regularly too and they need sufficient available iron in order to keep them in top condition.

Go to Reefcentral.com and have fun!
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