75 or 90 for planted?
6.8 during the day, 6.6 in the AM before the lights come on..
My PH fluctuates from 6.65 to 6.75 with the controler-- which is really not that much less variance than what you have been able to achieve without a controler. Are you able to set your flow rate and let it go for a while without fear, or do your really need to check it often during a day? How long does it take you to get re-set after swapping out your CO2 cylinder? Possibly. In a tank with the absolute minimum CO2 loss, it's reasonable to expect slightly higher CO2 accumulation during the night. I don't know that it's really necessary to maintain extremely stable CO2 levels. In nature, it's common for nighttime CO2 levels to be higher than daytime levels. This is a natural swing. In fact, this natural CO2 swing might even be beneficial to plant growth. Here's a study that found improved growth when CO2 levels were allowed to drift higher at night: http://www.co2science.org/journal/2002/v5n4b1.htm Interesting article. Thanks. (I am amazed there is journal called "CO2 Science", glad to know about it.) A .2 variation is nothing! I don't know that I ever succeeded in getting that little bit of a swing without a controller. I think the best I ever did was about .5 swing, which I thought might start killing fish (especially since that is the BEST I ever did). Well if I ever re-do my CO2 system, I may try getting a wet/dry filter and (probably more importantly) a better CO2 regulator/needle valve. I have trouble at times getting a consistent flow through my regulator/needle valve combination, particularly after I change the CO2 tank -Bruce Geist |
75 or 90 for planted?
you might want to think about acryllic tanks for this size, it will make
them far lighter, and the rounded edges look nice "Dustin" wrote in message ... Thanks for the input you two :) I bought a 125 gallon today on sale at the lfs, I got a better discount since I am friends with the manager, 599.00 Im guessing that is a good price :) Any suggestions for lighting this for plant growth? :) Thanks! "Bruce Geist" wrote in message ... I have a 135 gallon tank that is 24 inches high. Leigh, as usual, gives excellent adivce. She (I hope you are a she Leigh-- if not then I appologise in advance..) is right about the light, though I find that even though its tougher to light the bottom of the tank, 25 inches is not insurmoutable-- especially if you are going to terrace. In addition, I personally think that less than 24 inches looks a little funny with a canopy. You may (or may not) choose to place a canopy over the top of the tank-- but assess how you think it may look with the shallower tank in the event you do want a canopy. Keep in mind also that there may be plants that you want to keep that get tall. It may be nice to have certain sections of the tank that are deeper than others. Just keep in mind that you may have trouble with high light plants in the deep areas. Certainly the "long arms" issue is real also. If you are a small person, then you may want to avoid buying a tank that is too deep for you to reach into. I know my wife would have a hard time reaching the bottom of my 135 gallon tank. I do not have a problem with this depth-- though any deeper would become a hassel. In summay, my cutoff would be about 24 inches-- not 21 inches. 25 inches may be problematic, but its worthy of careful consideration. For what its worth, that is my 2 cents. -Bruce Geist LeighMo wrote in message ... Id like a 75 or 90 from all-glass. Which of these is better for the planted aquarium in yoru optinion, and where is the best tank for my buck? any orders, or something to that effect? Ordinarily, bigger is better, but for a planted tank, I'd go with the 75 gallon. The 90 and the 75 have the same "footprint." The only difference is the 75 is 21" high, and the 90 is just over 25" high. A planted tank deeper than 24" can be difficult. That depth is hard to light adequately. (You wouldn't think only a few inches would make a difference, but it does, because light intensity falls exponentially with distance.) A planted tank also requires constant maintenance, and if the tank is that deep, it will be difficult (unless you have really long arms!). I've heard of people who accidentally poisoned all their fish, because they reached into a deep tank without showering first, and their underarm deodorant got into the tank. As for price...mail order for a tank this size is not economical. The shipping will kill you. Your best bet is probably to order it from a chain like PetCo. The big chains use tanks as "loss leaders," selling them at a loss in hopes that they'll make it up by selling you fish, accessories, etc. Call around your LFSs and ask, but IME, the small local shops will all charge hundreds of dollars more than the big chains. The local shops around here all wanted $700 to $800 for an All-Glass 75 gallon economy tank and stand. PetCo asked $325 for tank, stand, and glass canopy top. Leigh http://www.fortunecity.com/lavender/halloween/881/ |
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