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Hahaha. I recognise one or two of the usernames in those threads from past debates about plant/biofiltration on other aquatic forums, not really surpising to see that certain individuals still don't like to accept new data that is super-relavent to their hobby, even nearly 10 years on😅. Crazy...

Softening your water will not make CO2 dosing more effective. Hard water doesn't really limit what plants you can have, more often the opposite is true. Most plants would do better in hard water than soft water due to the extra minerals. I have soft water and have to add minerals to harden...

I understand your concerns now, with random ammonia in the tapwater, I would be hesitant to drink it tbh! When I worked at an LFS, we had a bunch of customers from one small area come in one week due to issues with ammonia in their tap water - I advised they report this to their water company...

If you have algae or plant deficiency issues that you wish to correct, or desire faster growth then you could turn your CO2 up slightly. Otherwsie, if you have no issues, I would personally just leave it at it's current level. TDS - Doesn't matter for most plants, some don't like it very high...

Nope! High phosphate is GOOD in a planted tank, that's why you are adding it via EI ;). You don't want low levels, this can lead to plant deficiencies. It is old-fashioned thinking that phosphates cause algae in planted tanks. Nowadays we dose fertiliser with high levels of phosphate using...

I wouldn't say RO is extremely dangerous, certainly not for soft water fish anyway. As explained in the links above, pH swings are harmless to fish and unavoidable in planted tanks. It's a different story in fish-only tanks (where a pH swing can be an indicator of something else gone bad) which...

But if you are adding anything like Equilibrium to the RO water, you wont be adding 100% RO water? :crazy: Using a small amount tap water vs. Equilibrium will make no difference to limescale accumulation. Whether the minerals come from your tap water or an expensive commercial remineralisation...

Add tap water to your RO water to add some minerals back, just add like 10-30% tap water depending on how hard your tap water is. Equilibrium is fine (I add a bit to my soft tap water when required), but if your using RO water because your tap water is already very hard then you already...

Ah, I do see what you mean. Tbh I'd think you'd probably lose both O2 and CO2 by adding an airstone during the photoperiod. Increasing surface area doesn't add O2 into the water if the O2 is already at equilibrium level (saturated). The Oxydator works differently, and from my understanding...

Interesting, didn't know that haemocyanin transported both O2 and CO2 in shrimp. Although I figured those principles would apply the same as with fish and haemoglobin, this explains why shrimp seem to react faster to CO2 issues! Though I still don't understand the intended function of the...

"Normal" injected CO2 levels of 30ppm are fine for shrimp. Pumping in more CO2 doesn't result in a loss of O2 - quite the opposite, as plants convert the CO2 into O2 - so injecting CO2 results in more O2, meaning the oxydator is not needed for any reason :).

Not used one of the oxydators before but seeing as your aim is to maximise both CO2 and O2 in a non-CO2 injected tank the following thread may be an interesting read: http://www.ukaps.org/forum/threads/maxing-co2-in-low-techs.29856/ . If you are already injecting CO2, then your water is...