Just wondering what do you think are the benefits of a simple water conditioner compared to something like Prime?
I will not use
Prime myself as it messes with water chemistry more than needed. The "best" water conditioner is one that does only what you need, and no more.
Most people have chlorine, some have chloramine, and these must be rapidly neutralized. Beyond this, the next common "benefit" for many conditioners is the detoxification of heavy metals; most people probably do not have heavy metal issues in their tap water, but there are times when one might. Some homes have copper water pipes and these especially when new can leech copper into the tap water. Municipal water authorities usually test for heavy metals and post the data, but levels that are "safe" for humans are not always safe for fish--copper is one of these. Those who only have chlorine, or chloramine, only require a conditioner that deals with these. The heavy metal benefit is worth having, and most (if not all) conditioners include this so far as I am aware.
If you have ammonia, nitrite, or nitrate in the
tap water, then a conditioner that deals with these may be advisable. But it depends upon the substance and the level. There are two conditioners that deal with all three,
Prime and
Ultimate [I think the latter also handles nitrate, but doesn't matter]. But unless you have one or more of these at a significant level, you do not need either conditioner; for one thing, they only detoxify these substances temporarily--Seachem says Prime is effective for 24-36 hours, after which the substances if still present will revert to being toxic again. But ammonia and nitrite at very low levels which would usually be the case in municipal water, will readily be taken up by the nitrifying bacteria and/or the plants. Nitrate is a very different issue, and high levels in the tap water need something much beyond any water conditioner.
You will note that in the fore-going I said in the tap water; ammonia, nitrite or nitrate in the aquarium need special handling, and Prime is about the worst thing to use because it adds chemicals which further stress the fish and it is temporary. Repeated dosing of Prime as a "treatment" for ammonia, nitrite and nitrate is detrimental and dangerous.
The other thing to watch out for in conditioners are the risky and dangerous substances that may be additives. One or two add aloe vera, which is now known to be harmful to fish gills long-term. Another adds valerian; once you see the side effects of this "drug," you wonder how anyone could think it can somehow benefit fish. Much the same goes for any "herbal" substance intended to "coat the fish" and "replenish the slime coat." Nonsense. Anything that is glue-like to coat the fish in water is going to be doing a lot of damage coating the gills and cells.
I use and recommend API's
Tap Water Conditioner, which I personally believe is the best product of its kind. It is the most concentrated (you need half of the Prime dose for chlorine) and there are no other conditioners as concentrated as this, which means less chemical substances in the water to get into the fish and cause issues. It also deals with heavy metals, which as I said is probably a good idea.