I know of several aquarists that use the "CARBO PLUS" and it works very well for moderately soft water (Fredrik L - you can check swedish prices on akvarielagret). The drawback is that the carbon sandwhiches are pretty expensive. For a 60 gal they need to be replaced roughly every 3 months and they run at about twice the price of a pound of CO2... The advantages are the ease of use - it is very easy to control the amount of CO2 injected and it can be controlled with a regular timer to shut of CO2 injection at night. Personally I leave CO2 injection on at night - I have a pretty good deal on refills and it costs me no more than 300 sek (~$30) per year. /Fredrik Nilsson > -----Original Message----- > From: P. Wehrung [mailto:pwehrung@chimie.u-strasbg.fr] > Sent: den 10 oktober 2000 18:48 > To: apisto@listbox.com > Subject: Re: CO2 > > > le 10/10/00 6:33, Eric Martina à emartina@uiuc.edu a écrit : > > > Which is better, an electrical method, a chemical method, > > or a pressurized > > gas method? > > There is a german online company marketing an electrical > device (9V) called > "CARBO PLUS". > > You'll find the homepage in german at http://www.zajac.de/home.html > > Maybe they can send a technical description in english. > > Patrick > > > > -------------------------------------------------------------- > ----------- > This is the apistogramma mailing list, apisto@listbox.com. > For instructions on how to subscribe or unsubscribe or get help, > email apisto-request@listbox.com. > Search http://altavista.digital.com for "Apistogramma Mailing > List Archives"! > ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!