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Re: [APD] Temperate plants for outdoor tank?
I'm assuming that this tank gets good, indirect sunlight, so would be
classified as a high light intensity tank. If that's correct I suspect
your plants suffer from lack of CO2, so the problem to solve is how
to provide it in a weatherproof way. If your tank is on a stand or
cabinet with an enclosed bottom why couldn't you make that area
weatherproof and use normal pressurized CO2? Then you would still
have a problem keeping the bubble rate constant, since the CO2 bottle
temperature would vary a lot, and that varies the regulator inlet
pressure. But, that is solvable with a two stage regulator. Am I on
On Tuesday, March 28, 2006, at 02:06 PM, Elaine T wrote:
> Hi. I usually lurk here but I thought you could help me out. I have
> outdoor 38 gallon glass tank. I live in zone 10 so it never freezes.
> In fact, the lowest the lowest water temperature this winter was 52F.
> It sometimes warms up to 90F at midday in the summertime, but 85F is
> more typical.
> So far, E. uruguayensis thrives and S. subulata (dwarf and normal
> does reasonably well. I also have an E. cordifolius that has survived,
> but it only grows floating leaves. Water lettuce and water hyacinth
> stay small but grow quickly when the water is above 70F. Hornwort and
> anacharis survive, but grow poorly - the anacharis tends to bleach.
> Complete failures (even when the water was 70-80F) include water
> H. polysperma, Myriophyllum aquaticum, Vallisneria americana, java
> and R. indica. They bleached and fell apart, perhaps from light shock.
> My water is moderately hard. Substrate is mostly 2-3 mm clay with some
> Flourite and fine gravel. Fish are mollies, flagfish, white clouds,
> bluefin killies, and dojo loaches. I fertilize with Plantex CSM+B,
> potassium nitrate, potassium phosphate, and NPK substrate spikes for
> swords. Calcium and magnesium come for free in my water. No carbon.
> CO2 equipment is not weatherproof and Excel kills anacharis. There is
> gentle water movement from a small pond pump and homemade matte filter.
> Does anyone have any suggestions for more submerged plants I can try?
> I'd like to get all of the substrate planted, remove the anacharis and
> use Excel, and rely less on water hyacinth for plant mass. The tank
> also has a hair algae problem which I'm hoping will improve with a lot
> more submersed plants. (EI fertilization helps, but the nutrient
> requirements of the tank seem to change a lot.)
> Sorry for the long post, but I figure too much information is better
> than too little. Thanks in advance for any ideas.
> --Elaine T
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