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incandescent spot lights, pH probes, laterite sources
- To: Aquatic-Plants at actwin_com
- Subject: incandescent spot lights, pH probes, laterite sources
- From: Erik Olson <eriko at wrq_com>
- Date: Fri, 3 Apr 1998 16:52:28 -0800 (PST)
- In-Reply-To: <199804032048.PAA01250 at acme_actwin.com>
> From: Phylesis <Phylesis at aol_com>
> So, no responce to my question on water. I spent an hour
> online last night searching through the Pet Warehouse catolog for
> Duplarite with no little amount of frustrstion and no product.Any
> other suggestions for a resource of laterite?
Daleco Master Breeder Products regularly carries Dupla.
Marine Monsters may also carry this.
for URLs to these & other places. (You may have to follow the link
to the main resources page).
> From: Dan Q <dqallwet at avana_net>
> incandescent does work (be it wasteful in the long run). I have a 10
> gal. I play with in my office that has only a 65W incandescent bulb
> for lighting. There is an assortment of plants one of which is
> Riccia. I have Riccia in 8 tanks (and vats) which are lit by
> fluorescent. At best, the Riccia gets about 2" deep under the
> fluorescent. Under the incandescent, The Riccia is much thicker with
> the incandescent. Directly under the bulb it's 4 1/2 " deep.
Very interesting. Do you think it's due more to the concentrating of
the light in one small area, or to the spectrum of the light itself?
65 watts over a subsection of a 10-gallon tank might be comparable to having
32 watts or more over the entire tank...
I was in Vancouver this week & got to see some of Steve's killi tanks,
which used compact fluorescent tubes that are meant to replace
incandescents. He had them in a reflecting fixture so that most of
the light was directed down in a cone. Curious what testing one
side-by-side with an incandescent may reveal..
> From: Jim Wilson <freaks at aracnet_com>
> Subject: ESU Coralife pH Tester
> What's up with the calabration solutions: Do I need all 3
> (7.0 4.0 & 10.0)
pH sensors usually do 2-point calibration, so the third solution is
not necessary. It's best to buy the solutions over the range you will
be measuring (I do the 4 and 7).
> Can I just use my tap water (7.0 -7.1 according to
> the city)for the 7.0 solution?
No. You don't really know what the pH is at a given time. Your water might
come out of the tap with a pH of 8 because of the (lack of) CO2, and later
settles to 7. You never know. The buffer is a known quantity.
> How long does a 4 oz bottle last?
Could last quite a while. You might try a chemical supply place like
Hach, which sold me 16 oz bottles for quite reasonable prices. Hach is listed
in the plant resources FAQ URL I quoted above.
eriko at wrq.com