Is it me or does everyone else get very different conflicting answers to every question in the hobby??? I feel like no one really knows and their answers are either pulled out of thin air or what they have heard from someone else without questioning it. Examples of this are: Compatible tank mates- I will read online that certain fish go well together, then the fish store tells me DO NOT put said fish together or there will be major aggression. But I see youtube videos with the fish together. I know each fish is different and must monitor the aggression anytime a new fish is put in. And I'm sure there are many factors that can trigger aggression like tank size and territorial boundaries, but why would the fish store give me a stern no that they can't live in harmony? I have read online not to mix African with South American Ciclids, but this same fish store has Severum with peacock cichlids and they have been in there for months without issue.. Water parameters- I am under the impression that each fish has a certain needs for PH range. Every site I go to for care guides and online purchases can have different ranges. One will say a Gold Severum needs 5.5 - 6.5 ph and another will say 6.5-7.5 ph, on top of that the fish store that sells them has them in tank water with an 8.2-8.4 ph and they are just fine! That a huge PH difference that I thought meant life or death for the fish... So who's right? I know as long as the PH is consistent they will adapt to it. So why even put parameters for each fish? The same goes for temp. Different sites have different answers. Basically, does anyone REALLY know the right answers? I mean, why spend all this time researching for answers when there are 2 or 3 or more answers that only confuse me. I want to properly take care of my fish and not throw them in a bad situation, but it seems like theres no way to know and just learn by experience. Months prior, I went against the advice of the online community because the fish store assured me I wouldn't have any problems and my favorite fish in doing so. Trying to set up the right tank for a new one and the information out there is irritating..