Hello everyone,
Wow, what a resource this forum is! I found it just in time, because I’m setting up my first aquarium ever, and doing it low-tech (except for lighting). The “Ecology of the Planted Aquarium” (Wow, incredible book!) has me on the track I want, but I lack the experience to work out some set-up details. I have some thoughts on substrate, lighting, etc that I’d like to run by you folks before I splurge. I’m willing to put up with a little trial and error with the substrate, but lighting is a big investment and I want to do it right. I’m aware that each question I have could have been a separate Topic, but I also couldn’t figure out how to break up this post because the whole aquarium is so inter-connected!
Goal: I want to create an Amazon planted community tank. I’m not worrying about plant and fish details yet, but since any setup advice might depend on what I’m planning, I’ll include some of what I’ve been thinking: I’ll probably need moderate and low light plants (depending on light, my options are listed below). As for fish, I’ll be aiming for a docile bunch, selecting a moderate population that could include tetras, angels (how old are they when they outgrow a 24x12x24” tank anyway?), a couple dwarf cichlids, cory cats, hatchets... I don’t need to breed any fish, but if I happen to get a stable low pH and GH (sounds tough with a Walstad setup) it would be neat to try.
I was given a 24x12x24 in. (30gal extra-high, I think) aquarium, which at first had me nervous about light penetration, but I’m thinking about maintaining the water a few inches below the top and having some emergent plants.
Substrate:
• Miracle Grow Enriched (0.18, 0.06, 0.12); 1.5” deep. (already have that laying around, yeah, I’ll be fishing for perlite)
• Fine gravel (Estes’ Nature Stones, seems 2-3mm); 1.5” deep. I want a darker natural look and don’t feel up to experimenting with sand. Will this coated gravel be a problem? I can’t remember where I read that it wasn’t a good idea. Are there other options?
• The catch: my (city) tap-water is pH=7 and GH=1.5. Part of me wants to put some crushed shells in the soil (to be on the safe side with plant nutrition), but the other part of me wants to experiment with low pH/GH environment (Amazonian). Does *anybody* have experience with natural low pH/GH aquariums? I’ve seen plenty of green plants growing in tannin-rich swamps in the Amazon (well, where the light actually reached the water, and I’m not sure how fast they were growing, either), but finding small suitable (grow *well* in low pH/GH) plants locally might be tough.
Lighting: I was also given an “AllGlass” 24” hood with 15W bulb; that’s not *nearly* enough. I’ve listed the other options I’ve found below. Each would also need a glass aquarium cover ($12). I’ve included what I *think* are the best bulb options for each setup. I could probably make any of these more efficient by enhancing the reflector. The tank is about 2m away from my only (west-facing) window but doesn’t get direct light (might get a little come May/June). My potted plants and I cherish the window light, so I’m not sure if I want to block it with the tank. The choices I’ve found:
1. “AllGlass” 24” twin tube strip, 30W ($40) (GE full spectrum $

2. Lighting store 24” twin tube strip, 40W ($3

(combine 4100K and 6500K, $9 each)
3. Lighting store 24” triple tube strip, 60W (waiting for a quote, same bulbs as above)
4. Aqualight freshwater 24” single strip compact fluorescent, 65W ($60) (6700K, $2

5. Same as above but double strip, 130W ($140)
My thoughts on those choices:
#1: I don’t think so, not enough “umpf”
#2: 40W might not be enough, unless I fill my tank with only 20 gallons to have about 2W/gal.
#3: Reflector is 16” wide, and would over-reach my 12”-wide tank. 3 bulbs to replace, ugh.
#4: I think it’s the best option/compromise, it definitely fits, simple. Does bulb life make the price worth it?
#5: Is the extra “umpf” worth the extra price?
I was given a penguin biowheel 170 (for a 50gal tank) and a bunch of replacement filters, but I can’t see how it could be useful in my tank. I therefore plan to get a Hagen AquaClear, with micro filter padding (mentioned in recent forum posts) for filtering and water movement and to have a QuickFilter on hand for tough jobs (like maybe ich). This way I can also have a lower water level in my tank.
So to sum up my biggest questions:
1. Is the gravel I picked ok, or is there a better option?
2. Should I put the crushed shells (or equivalent) into the soil?
3. Is the compact fluorescent the way to go? Is 65W good for this tank? How much would I need if I used the window?
And of course, any suggestions are more than welcome! Thanks!