Tang issues

I have some tangs that are getting too skinny...they r not starving i just want them to not show the bonny spines, also i feel like they are to scardy cats and i wish they had more personality idk if there is something i can do maybe just accommodate them better so they feel more comfortable. It doesn't help that they r in a store with little kids tapping on glass and live rock is scare, coral is non existence because we r in too low of a classification of a store to carry them. I put fake coral decorations to put them at ease and have a shelter somewhat but they just stay at the corner and mesh with the background, specially the blue tangs. I have heard zuchinni can be a good option for them, because all they r eating so far is sea weed, they r not responsive to pellets or anything else i have tried. i have never had this problem before with tangs, maybe is just where they came from. Also, my assistant manager is open to almost anything i will suggest, and he is almost always on my side so i can convince him to make some arrangements.
thanks

You r right i should have explained better. I am an Aquatics Specialist at PETCO i have six sump systems one sump is saltwater which contains about 300 gallons of water divided into 8 tanks, 6 small, 2 bigger ones. I do weekly water changes on the tanks and take about 30% of the water and replace it with filtered water that PETCO provides me with its not that great but it does the job. The ammonia levels nitrate and nitrite is always zero that's where i like to keep it. i change poly fibers on both filters once a week, and the carbon whenever it overflow which is about two weeks. The fish have been doing a lot better since i took over about a month ago, things are actually surviving. The problem i am having is making the tangs eat better, and be more extrovert, i have some tanks with crushed coral and some with sand, which have live rock in them. they seem to do better in the tank with live rock. I keep the salinity at about 1.023 and 1.024 and keep a constant stock of seaweed in the tanks. the others get marine pellets and some live food like the trigger. PH is about 8.3 and temp is about 82-84 F.

Yes my position is an Aquatics Specialist, but i also work for petco i don't have to have a degree or anything to fill my position. I have also tried a variety of foods maybe i am not explaining myself correctly. I know what tangs eat, i just need to get them to actually eat this foods. that is the information that i want. I have seaweed, as well as broccoli, krill, formula 2, and others. I have never had a problem with a tang not eating at the other pet store i worked at, of course we also got our fish from another company since it was an independent shop.

first of all, i am not trying to sound like a big shot whose grave is going to be right next to Julian sprung's or anything like that and i think your comment is kind of rude but maybe i am not making myself clear. Second, aquatics specialist is a position at petco that i am currently filling, it does not require me to have a degree or anything. Third i never said i didn't know what tangs eat, i do know what they eat, and i have plenty of food for them, the information i am looking for is creative ways to fatten them up, because i think they could be eating more. They have food available 24-7 in the tanks and i renew algae everyday, as well as broccoli and zucchini, formula two, and others, such as ocean nutrition algae pellets, spirulina etc.... they are not eating any meaty food, or pellets or anything in like that mostly because when i go to feed them they just hide and can't see the pellets falling and won't bother with the one's that fell on the bottom. that is what i need help with. they must be eating something otherwise they would be dead by now so i know they pick at the algae and seaweed. I want to figure out a way that they can eat and be more extrovert about food. I got a trigger who would refuse to eat pellets until i tried a ghost shrimp and a minnow he ate the minnow quickly and now he is not shy anymore and is eating pellets as well, that's my goal with the tangs. i just need help, again, with creative ways to get them to eat. For example, i had a heniochus that would not eat, and i know they like to pick on coral, so i read somewhere that i can place food inside a dead coral piece to get them to eat since it can be challenging and they hide when i go to feed them and don't see the pellets falling. That advice worked perfectly for my fish and i was very happy with the result. i hope this can better help you understand my problem. As for me, i am looking into getting a marine biology degree, maybe next year depends on how my move goes.

once again you are not reading what i posted. My fish that i care for are fine. I do weekly water changes on ALL six sumps including saltwater, that is WEEKLY. each sump is about 300 gallons. My nitrates, nitrites, and ammonia levels always r at 0 and that is checked EVERYDAY. When i said i am an aquatics specialist i was merely listing my position in this company. The reason i leave seaweed in the tanks 24/7 is to reduce deaths by hunger either by damsels or other fish i do not have green algae growing anywhere in my tanks i am referring to sheets of seaweed i am sure you know what those are. My PH on the saltwater tanks are 8.3-8.4 and the salinity ranges from 1.023-1.025 but i keep it mostly between 1.023-1.024. There is a protein skimmer as well. Everyone is fine, the fish are surviving, especially now since i took over. I have fish i have been keeping for over a month that are still alive, and well. My anemones r thriving and i feed them weekly with silver sides. I also change the poly fibers in the filter weekly due to wastes. The water is fine, even though it evaporates quite quickly. I am there 5 times a week, and when i am not, there is someone that does the basics like feeding and water testing. MY PROBLEM IS that i want to know creative ways to make tangs eat MORE, i want to fatten them up. The reason i am unsuccessful is because there r a few things working against me such as: they hide when i want to feed them pellets, seem unresponsive to live food which ends up dying, ignore frozen thawed foods, and could care less about anything else. I have contacted the people who ship us these fish to ask what they feed them there but have not gathered helpful information. I also asked whether these fish are tank raised since it makes a difference. Our store is trying to provide the best care for their aquatics department that's why they hired me, and since they have hired me the fish have been doing much better, and surviving. I also tell the staff on days i am not there to watch out for possible problems and do what is on the maintenance schedule for that day. I ASSURE YOU THE FISH ARE WELL TAKEN CARE OF, THE TANGS HAVE BEEN IN MY STORE FOR ALMOST A MONTH IF THEY WERE NOT EATING AT ALL THEY WOULD HAVE DIED BY NOW. What i want to know, again, is creative ideas on how to get them to eat MORE, and hopefully become more extrovert. that is all the information i need from you. And also like i said before i don't need basic information, or any information i can get from a book, i know or have those resources readily available to me. The people i usually consult with and i have never had this problem with tangs before therefore i am looking for more information here. If you are not going to write specifically about what i am asking, why even write about anything at all. instead of making inferences about the way the fish are treated or the condition of the store or where they are kept ask for next time because you obviously don't know every detail about my tanks. And you might not have meant to "hurt my feelings" but you were trying to, well i think i don't have to explain myself. I still need an answer, if not from you, from whoever that ACTUALLY wants to help not assume what i do and don't do, or belittle me. I am a responsible person, and that is why i am here to ask for ideas, i work hand in hand with my manager so he knows exactly what is going on and so does the district aquatics manager that stops by or calls regularly. The manager also does most of the maintenance on my days off, i have posted water conditions with accurate numbers at least twice but for some reason you read straight over those so i am putting them on here again. I do not feel "horrible about myself" in fact i am very proud of my work and have been complimented several times by my peers on how good things are doing. I do not need another conscience, i have one that has worked great so far in my life. I also have been building close relationship with my customers, and would never sell them something that wasn't good or doing poorly. Furthermore i usually request them bring me a water sample for testing if they haven't gotten one done lately or have a kit at home for both fresh and specially salt water. If i am unsure about a good home for the fish i can deny the sale or if the water test came out with bad results i won't sell either. Of course i test the water before i add salt all our sumps use the same water that comes out filtered, that is a no brainier. Phosphates however, out company does not carry tests, strips, or awareness it even exits. I am being forced to go corporate on the matter because it's so important. We are too low of an assortment store to carry coral, all we have is fish, live rock, anemones, and cleaning crew. Copper treatments in the store or products and forbidden by petco therefore our tanks are copper free, and we have no quarantine tanks at the moment but i am working with management to make arrangements. Any other information you need ASK and i will answer do not make assumptions and by all means read ALL of my post. The fish themselves are clear, or pristine, they r not cloudy or discolored, no funguses, no pop eye, not body or tail rot, no missing tails, or nipped fins. thanks