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how is he mocking you???! and yes you can argue they are not expensive, i have a 2nd hand regulator and a fire extinguisher. £40 total plus a bit extra for diffuser and tubing. don't bother with a filter either they are sometimes pretty expensive and hardly can be said to be pretty! :crazy...

:lol: oh well, back to the "spammy" type posts to get my count up again then............ i left this one because i think i've put my tuppence worth in on another forum mitch uses.

good to see you here dude. i'll let clive answer this for ya! :)

ok, so when the lighting is increased to the point of "needing" extra co2, its not at all because the co2 is getting depleted but purely that the concentration isn't enough?

hi arron. I'm aware of the plants compensating for low co2 with the production of rubusco. But what happens when co2 is completely depleted? the lighting break obviously would work in a tank with no co2 added for the same reasons as a tank with diy co2 would it not? surely the larger the...

hey. I've been wandering about whether a low tech tank could be too heavily planted for its own good? Obviously the most limiting factor in low tech is co2. I know ppl have a light break to allow levels to replenish again but surely at some point plant mass could be too great for even this to help?

hi bill. You better get typin then! ;-) Tbh, i've not heard bad things or how hard it would be to set up a walstad style tank, in fact from what i gather it seems fairly straight forward. Well certainly no more difficult or complicated then any other method of running a tank. In some ways...

i wandered about the co2 content in fresh tap water when i started my tank. used the ph meter to measure fresh tap water and water that had been left out over night. straight out of the tap ph was about 7.2 after 24 hours ph was 7.8 so it was coming out of my tap with nearly 15ppm co2 dropping...

this is the way that i understand it...... the plants will be working with the bacteria in ridding the tank of ammonia and the bacteria colony will only grow as big as it needs to, if plant growth halts/slows for any reason, ammonia can rise before the bacteria colony grows suitably large...

for what my opinion is worth, i think the iron thing is like nitrates and phosphates in the way they are blamed for causing algae but actually dont, they can possibly make an out break worse if at "high" levels after something else, ie ammonia triggers it. as for allelopathy, while i think in...

i asked clive pretty much the same a while ago, here is his reply.

ok so i got the science of it wrong, but by your explanation it still means if a plant use's more co2(because it has access to air) it will also eject more co2 into the aquarium than a fully submerged plant would? therefore in a low CO2 situation would benefit the aquarium more? or am i totally...

hi, currently running a high tech tank and enjoying every minute of the learning experience (i even look forward to doing the W/C every week!! ) my hands are in this for a couple of hours every sunday, trimming, tidying and slowly improving the layout. now as i'm getting the first stages of...

emergent plants will help the substrate as you say, more than submerged plants tho, which in turn will help the bacteria and ultimately this will help "defeat any algae growth" also they will obviously take CO2 for the air rather than the water, so other plants will have more available...

would rooted plants that grow out above the water level be an option that would give you best of both? :thumbup: seems they've not been mentioned yet?