#1 All tanks have a powerful enclosed outside filter (don't rem the name - sorry, I work nights an my brain is dead!!) that I am currently running without charcoal (just the foam cover on the cartridge that holds the charcoal). The current is better than when I started as they had been packed with the small charcoal bits. I could hardly get it out, it was packed so tight! My first question is, can I get the larger charcoal pieces? As I remember, when I had my store, they were coming out with the smaller type of charcoal, but I would like to have it less compacted, so there is better water flow through it. Am I off my rocker??
#2 They also have a powerhead on one lift tube per tank. These are not functioning and I believe I need new impellers, which have to be ordered. I do worry about that, in case that is not what is needed, but that is the only thing that I can think of! There is just NO flow when they are plugged in. One impeller is chewed up a tiny bit on each end. I will clean each one thoroughly and see if this makes a difference, too.
#3 Now, there are two aquariums that have just basic feeder goldfish in them. One tank had fin and tail rot, so badly the fins were gone - hardly any tail fins, no dorsal, pectoral, or anal fins!!! No "meat" was affected by this, fortunatley! I treated with melafix and thankfully, it looks like the fins may be trying to grow back!! BUT, I did notice a sore or eruption on the side of one fish, so I have started treatment again. The other tank has one fish that really has an ulcer on it's side, plus a swollen area, so I have started medicating them, too. I am sure there is better meds than the melafix, but I don't have access to any. Earl May does not carry the Mardel products (I believe they used to) and I don't remember what Walmart carries. What they have is not a larger quantity, I know, so it seems the Melafix is my best bet at the present, although, there is another fungus medication by the same company that makes the melafix.
#4 This is the reason I joined this group!!! I bought 3 clown loaches and put them in a tank with a large hollow triple pot ornament for hiding and a few community fish (neons, 1 bleeding heart and another type of tetra). It was recommended on the label on the tank that you buy in groups of at least 5 and upon further research, after I got home, that a 75 gal. would be the MINIMUM size tank to go with! I know for the time being I am OK with the 45 gal. tank, but I guess I worry about having 3 loaches, versus 5 loaches!! At this point there is regular aquarium gravel in the bottom and they fish are fed a flake food and an algae tablet. Being in a smaller town (and I no longer have my store!!

Would someone kindly give me some feedback on this?? Is 3 loaches OK? What can I feed additionally? Will the gravel be OK, or should I consider a change to a sandy substrate, etc. when I have money available?
#5 A HUGE thing, too, is that the support on EACH aquarium (on the top) has split - broken lose from the back side and a couple tanks are bowed out a little bit!!!!! YIKES!!!! The piece going from the front to the back has cracked and pulled away!! The Marinland aquariums do have a limited lifetime guarantee, so I will be checking to find if the business manager still has a record of the purchase of the aquariums, so I can pursue replacements! If that works, I can set the aquarium up like I want to for the maximum comfort of the loaches.
I have not done any water testing, but I had cleaned, did water changes, etc. to begin with, to get the tanks looking presentable, but I imagine I should get tht done before too long! I believe soft water is being used in this home, though.
Well, that is it, in a big nutshell!! Gradually, I will be adding more fish to the aquariums, but it will be a pretty slow process, considering the little bit of $$$ that I will be working with. I was even asked if I could do one aquarium at a time!! This came from a lady that knows nothing about fish, etc. and I explained that I was basically doing that, but replacing NEEDED things - primarily heaters!!
If I could get some feedback, that would be great! I sold my store a bit over 20 yrs. ago and am probably behind times!!

Thank you, kindly, Paula