I was considering getting the Ultimate CO2 System from aquariumplants.com (http://www.aquariumplants.com/product_p/pr4026.htm) for my 150 gallon tank. But at $379.99 base price, I decided to shop around some more.
Foster and Smith sells what appears to be a similar system for $386.99 (http://www.fosterandsmithaquatics.com/product/prod_display.cfm?pcatid=9933), but they also sell a "semi-automatic" system for only $116.99 (http://www.fosterandsmithaquatics.com/product/prod_display.cfm?pcatid=9935). From what I can tell, it's just like their $386 fully automatic system only with a wimpier diffuser and it uses a timer rather than a pH controller. Would this system be good for a 150g tank? Also, couldn't I just buy a pH controller off eBay to make this system fully automatic? I think I've seen them as low as around $80, so the total price is still far cheaper than the $386 system or the system from aquariumplants.com.
Foster and Smith sells what appears to be a similar system for $386.99 (http://www.fosterandsmithaquatics.com/product/prod_display.cfm?pcatid=9933), but they also sell a "semi-automatic" system for only $116.99 (http://www.fosterandsmithaquatics.com/product/prod_display.cfm?pcatid=9935). From what I can tell, it's just like their $386 fully automatic system only with a wimpier diffuser and it uses a timer rather than a pH controller. Would this system be good for a 150g tank? Also, couldn't I just buy a pH controller off eBay to make this system fully automatic? I think I've seen them as low as around $80, so the total price is still far cheaper than the $386 system or the system from aquariumplants.com.
. As for the systems you linked you will still have to buy a co2 tank so add another $115+. For a tank that size you will need a good reactor the