90 gallon plant tank, suggestions?
Well, I just took the plunge and ordered my "dream" tank. A 90 gallon
reef-ready with a wet/dri sump. So now, while I'm waiting for it to arrive,
I have a few decisions to make, and was looking for some suggestions.
First, is lighting. I have read most, if not all, of the available material
on lighting, and for now I am planning to go with NO T-8 flourescents. I am
considering 8 tubes, for a total of 256 Watts, this is a little under the
3W/gallon rule, but wondered if it would be enough; especially considering
that this 90 gallon is 24" high - maybe 10 would be better (boy that's a lot
of tubes!)? I could go the VHO route I guess, and use 3 tubes for 330W - how
often does one need to change VHO bulbs? Wait until they burn out, or
every 6 months to a year like the NO's? At this point, I think MH is out
of the question, because I don't have the space to hang pendants, although
I guess I could use one of those retro kits with a fan, and put them in the
canopy? How often does one need to change out MH bulbs?
Secondly is under gravel heating. I am currently thinking about using the
150W duplaflex cables with my own 24V transformer, but am having a bear
of a time finding a 24V/8A transformer (needs to be 6.2A nominally, 8A for
safety). Anybody have a source for this one? Also, is 150W enough for a 90
gallon, and will I need to put a supplementary heater in the sump?
That's about it, the substrate is going to be small-grain gravel, with
laterite. Oh, I almost forgot, I will be using CO2 injection, from a
compressed gas cylinder - manual control for now, hopefully electronic
control sometime in the future. Anybody have any good plans for a CO2
diffuser that works well in a sump? (I haven't checked out all of the plans
on the Krib yet :>)
Thanks for all of the great info I have gleaned over the past year, just
reading in the shadows!
david at joshua_medimg.emory.edu
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