Martin raises a good point about light below. The lights in the hoods I have
are indeed actinics, with each hood holding a pair of the following: Osram
36 W, 2900 lumen Daylight; and Power Compact 36 W, 460 nm Blue. with (I
think?) more lumens. Like I said before, I've never fooled with this type of
gear but I know there's always extensive debate on lights in various 'zines.
Martin said he didn't think actinics would provide enough phytoreactive
light. But I would think that a source of 460 nm light would be exactly
right, since that's the range where blue shades into green, and I know that
various aquatic photosynthetic pigments have reaction peaks in that range.
Any opinions based on this more exact info?
And I should have mentioned that the river environment I'm aiming at is for
steady flow, say about 3 or 4 knots, rather than real current like, say, in
the Tennessee which more typically has a 12 knot current locally. So the
H.O.T. magnum gives me adequate flow for my purposes to replicate the area
of Sipsey Fork I'm inspired by. Ultimately I'm more worried about
Huntsville, AL, US of A
>From: Irate Mormon <archimedes_at_bayspringstel.net>
>To: "nanfa_at_aquaria.net" <nanfa at aquaria.net>
>Subject: Re: NANFA-- 135 gal. Freshwater Tank
>Date: Sat, 31 Jan 2004 23:13:37 -0500
>If you are trying to recreate a river system, the H.O.T. will N.O.T. do it.
>Like Casper said. If you want primarily a plant tank - well, OK then. I
>have much use for a sump myself - I use a fluidized sand bed for bio
> On my 110 gallon native tank I have an Ocean Clear canister filter
>about 40 s.f. of mechanical filtration area) driven by a Little Giant pump
>has an unloaded throughput of about 450 GPH at 4' of head. I have the
>placed below the water surface (so as to retain CO2) and directed
>along the back of the tank. I have a ball valve which splits the flow
>the FB filter and the canister. If I need river-type current, I have a
>supplemental power head/water pump which moves about 400 GPH, which I
>on eBay for about $25 - can't remember the name offhand but it's a very
>versatile unit, and moves a lot of water for cheap.
>Oh, the actinics (usually around 10,000K)won't be much help to your plants.
>should replace 'em with lights which have more output in the phytoreactive
/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ This is the discussion list of the North American Native Fishes Association
/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ nanfa-request_at_aquaria.net. For a digest version, send the command to
/ nanfa-digest-request_at_aquaria.net instead.
/ For more information about NANFA, visit our web page, http://www.nanfa.org